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{{Short description|Conditions of the skin, clothing and houses in the Torah}}
{{italic title}}
{{Tumah and taharah|expanded=Miscellaneous}}
'''''Tzaraath''''' ([[Hebrew language|Hebrew]]: {{Script/Hebrew|צָרַעַת}} ''ṣāraʿaṯ''), [[#Name|variously transcribed]] into English and frequently translated as '''leprosy''' (though it is not [[Hansen's disease]], the disease known as "leprosy" in modern times<ref name=kaplan/>), is a term used in the [[Bible]] to describe various [[Tumah and taharah|ritually impure]] disfigurative conditions of the human skin,<ref>{{bibleverse|Leviticus|13:2-46|HE}}</ref> clothing,<ref>{{bibleverse|Leviticus|13:47-59|HE}}</ref> and houses.<ref>{{bibleverse|Leviticus|14:34-53|HE}}</ref>  Skin ''tzaraath'' generally involves patches that are white and contain unusually colored hair.<ref name=kaplan>D. L. Kaplan, "Biblical leprosy: an anachronism whose time has come", ''J Am Acad Dermatol'' 1993 Mar;28(3):507-10. doi: 10.1016/0190-9622(93)70071-z.</ref> Clothing and house ''tzaraath'' consists of a reddish or greenish discoloration.<ref>{{Bibleverse|Leviticus|13:49|HE}}, {{Bibleverse-nb|Leviticus|14:37|HE}}</ref>

The laws of ''tzaraath'' are given in depth in chapters [[Tazria|13]]–[[Metzora (parashah)|14]] of [[Book of Leviticus|Leviticus]], and several Biblical stories describe individuals who have contracted ''tzaraath''.

== Name==

Variant [[Transcription (linguistics)|transcription]]s of the name into [[English language|English]] include ''saraath'', ''zaraath'',<ref>{{citation |last=Lendrum |first=F.C. |date=1954 |contribution=The Name 'Leprosy' |title=Etc: A Review of General Semantics |volume=12 |issue=1 |jstor=24234298 |pages=37–47 |publisher=Institute of General Semantics |contribution-url=http://www.jstor.org/stable/24234298 }}.</ref> ''tzaraat'',<ref name=andy/><ref>{{citation |first=Phillip |last=Eichman |date=1999 |contribution=The History, Biology, & Medical Aspects of Leprosy |title=The American Biology Teacher |volume=61 |issue=7 |pages=490–495 |publisher=University of California Press, National Association of Biology Teachers |doi=10.2307/4450750 |jstor=4450750 }}.</ref> ''tsaraat'', ''tzaraas'', and ''tsaraas''.

The Hebraic root ''tsara'' or ''tsaraath'' ({{lang|he|צָרַע}} "to be struck with leprosy, to be leprous"), and the Greek ''lepros'' ({{lang|grc|λεπρός}}), refer to conditions other than [[Hansen's disease]].<ref name=andy>{{cite journal |last1=Grzybowski |first1=Andrzej |last2=Nita |first2=Małgorzata |title=Leprosy in the Bible |journal=Clinics in Dermatology |date=January 2016 |volume=34 |issue=1 |pages=3–7 |doi=10.1016/j.clindermatol.2015.10.003 |pmid=26773616 }}</ref> The editors of the [[Septuagint]] translated the term ''tzaraath'' with Greek ''lepra'' ({{lang|grc|λέπρα}}), which in classical sources referred to [[psoriasis]] and similar skin conditions; at the time Hansen's disease was known in Greek by a different term (''elephantiasis graecorum'').<ref name=kaplan/> The connection with the bacterial infection now known as [[Hansen's disease]] increased as the latter disease spread more widely, and was firmly established by [[Islamic medicine|Islamic works on medicine]] in the [[9th century]].<ref name=andy/> The classical Greek term ''lepra'' stems from the noun ''lepis'' {{lang|grc|λεπίς}} (a scale (of a fish)), which in turn stems from the verb ''lepó'' {{lang|grc|λέπω}} (to peel), hence 'leprosy' (literally, morbid scaliness).<ref>Henry George Liddell, Robert Scott, A Greek-English Lexicon article {{lang|grc|λέπρ-α}},  Ion. {{lang|grc|λέπρ-ρη , ἡ, (λεπίς)}} cites "A. leprosy, which makes the skin scaly, [[Herodotus]] ''Histories'' 1.138, [[Hippocrates]] ''Aphorisms'' 3.20 (plural), Prorrh.2.43 (pl.), Epid.5.9 (sg.), Morb.1.3 (sg.), Arist.Pr.887a34, [[Theophrastus]] ''Characters'' 19.2, Sud.14, [[LXX]] Leviticus 13.2.</ref> Variants of the word ''leprosy'' conflating ''tzaraath'' with Hansen's disease were used from the earliest [[English translations of the Bible]], including [[Wycliffe Bible|Wycliffe's]], [[Tyndale Bible|Tyndale's]], and [[Coverdale Bible|Coverdale's]].

The [[Root word|linguistic root]] of ''tzaraath'' (צרע) may mean "smiting";<ref name="EncBib">Cheyne and Black, ''[[Encyclopedia Biblica]]'', "Leprosy, Leper", p.2763-2768</ref> the Arabic cognate ''ṣaraʕa'' (صرع) has a similar meaning.<ref>[http://lexicon.quranic-research.net/data/14_S/045_SrE.html Lanes Lexicon: صرع]</ref> Alternatively, ''tzaraath'' may be derived from the Hebrew word ''tzirah'' ([[wasp]]), based on the idea that ''tzaraat'' affects the skin in a manner resembling a wasp's sting.<ref>John F. A. Sawyer, "A Note on the Etymology of ṣāra'at", Vetus Testamentum, Vol. 26, Fasc. 2 (Apr., 1976), pp. 241–245</ref> Other theories suggest a connection to the roots שרע ("to spread") or זרע ("seed", i.e. a growth).<ref name=dm>''Daat Mikra'', Vayikra p.217-237</ref>

The manifestation of ''tzaraath'' is termed a ''negah'' ({{Script/Hebrew|נגע}}) "affliction", ''nega'im'' (plural: {{Script/Hebrew|נגעים}}).<ref>{{Bibleverse|Leviticus|13:2|HE}}, etc.</ref>

== Affliction of the body ==
There are three varieties of ''nega'im'' that relate to human flesh:
# on the skin ({{bibleverse|Leviticus|13:1-17|HE}})
# in a boil ({{bibleverse|Leviticus|13:18–23|HE}}) or burn ({{bibleverse|Leviticus|13:24–28|HE}})
# bald patches or lesions of the scalp or beard ({{bibleverse|Leviticus|13:29–44|HE}}), in which case the lesion is called a נתק (''netek'')<ref>{{bibleverse|Leviticus|13:30|HE}}</ref>

=== Skin patches ===
White patches of the skin are confirmed as ''tzaraath'' by the occurrence of one of three signs:<ref>Mishnah ''Nega'im'' 3:3</ref>
# white hair (והיא הפכה שיער לבן) – if at least two hairs within the confines of the ''negah'' turn white<ref name="lev3-10">{{Bibleverse|Leviticus|13:10|HE}}</ref>
# healthy flesh (ומחית בשר חי) – if skin of a normal appearance appears within the confines of the patch<ref name="lev3-10"/>
# spreading (ואם פשה תפשה המספחת בעור) – if the patch became enlarged since the time of the initial examination by the Kohen<ref>{{Bibleverse|Leviticus|13:7|HE}}</ref>

''Tzaraath'' skin patches can come in three varieties ({{Bibleverse|Leviticus|13:2|HE}}): ''se'et'' ("a rising" or "discoloration"<ref name=milgrom>[[Jacob Milgrom]], ''Leviticus'', 773-779</ref>), ''sapahat'' ("a scab"), and ''baheret'' ("a bright spot"). The meaning of these terms is obscure, but they may suggest that ''tzaraat'' consists of an abnormal skin texture as well as color. However, rabbinic interpretation almost universally concluded that these three terms refer to different shades of color (white like wool or like snow, etc.) rather than different textures.<ref name=dm/> The rabbis even argued the phrase "its appearance is deeper than the skin of his flesh" ({{Bibleverse|Leviticus|13:3|HE}}) refers to color ("deeper" presumed by the rabbis to mean "of lighter color").<ref name=dm/> As ''se'et'' and ''baheret'' (both terms which may refer to color and not texture) are later discussed individually ({{Bibleverse-nb|Leviticus|13:10|HE}}, {{Bibleverse-nb|Leviticus|13:4|HE}}), while ''sapahat'' (apparently referring to texture) is not, ''sapahat'' may be considered a possible feature of ''se'et'' or ''baheret'' rather than an individual condition; in which case, the rabbinic interpretation may also be the original meaning of the verses.<ref name=milgrom/>

Paradoxically, if the ''tzaraat'' covers a person's entire body, it is considered pure, and no isolation or purification ritual is needed.<ref>{{Bibleverse|Leviticus|13:12|HE}}</ref> However, according to a minority interpretation, it is not the entire body, but the entire lesion (including any "islands" of previously healthy skin within the lesion) which must be covered by ''tzaraat'' in order to have this pure status.<ref>[https://www.youtube.com/watch?v=g-tUQa--zuk חידת הצרעת הטהורה | ד"ר נריה קליין]</ref>

=== Boils and burns ===
Boils and burns, as occur naturally as a result of an [[abscess]], blunt force trauma or thermal insult to the skin, are not ''tzaraath'' and do not carry impurity. During the healing phases of these wounds, however, if certain signs that mimic those of the aforementioned patches appear, ''tzaraath'' may occur.

Confirmation is by the occurrence of one of two signs:<ref>Mishnah ''Nega'im'' 3:4</ref>
#white hair (ושערה הפך לבן and נהפך שער לבן בבהרת) – similar to that in patches<ref>{{Bibleverse|Leviticus|13:20|HE}}, {{Bibleverse-nb|Leviticus|13:25|HE}}</ref>
#spreading (ואם פשה תפשה בעור and אם פשה תפשה בעור) – similar to that in patches<ref>{{Bibleverse|Leviticus|13:22|HE}}, {{Bibleverse-nb|Leviticus|13:27|HE}}</ref>

=== Scalp or beard ===
The initial symptom of this type of ''tzaraath'' is patches of hair loss. According to [[Maimonides]], scalp and beard ''tzaraath'' is characterized by hair loss without any change to the skin of the bald spot.<ref>[[Maimonides]], [[Mishnah Torah]], ''Taharah'', ''Hilchot Tuma'at Tzaraath'' 8:1</ref> The [[Tosefta]], however, maintains that the skin of the bald spot becomes altered.

There are two confirming signs:<ref>Mishnah ''Nega'im'' 3:5</ref>
#thin yellow hair (ובו שער צהב דק) – if at least two-and-a-half hairs from within the bald patch turn yellow ({{Bibleverse|Leviticus|13:30|HE}})
#spreading (והנה פשה הנתק בעור) – if the balding spreads, according to Maimonides. According to [[Abraham ben David]], who quotes the Tosefta, this spreading would refer to spreading of a skin change as well ({{Bibleverse|Leviticus|13:36|HE}}).

While baldness is not a form of ''tzaraath'', patches that occur on a bald scalp may be ''tzaraath'' if they meet the criteria mentioned by the Torah. Such an eruption on a bald scalp must appear in a distinct fashion, but is regulated by rules similar to that of ''tzaraath'' on the skin; however, it can only occur on men. For a scalp eruption to be ''tzaraath'', the lesion must be a white patch tinged with red (נגע לבן אדמדם).<ref>{{Bibleverse|Leviticus|13:42|HE}}</ref> This can occur in one of two places: within what are referred to as a man's posterior baldness (קרחת) and anterior baldness (גבחת).

=== Inspection and pronouncement ===
To determine whether a skin condition is indeed ''tzaraath'', the afflicted individual must visit a ''[[kohen]]'' (a priest, possessing direct male lineage to [[Aaron]]). The ''kohen'', trained in examining lesions and diagnosing ''tzaraath'', examines the lesion according to the previously mentioned criteria, and determine whether it meets the specifications of ''tzaraath''. If during the initial examination the lesion meets the criteria for ''tzaraath'', the ''kohen'' pronounces the individual [[Tumah|ritually impure]] (''tamei'', טמא).<ref>{{Bibleverse|Leviticus|13:3,20,25,30|HE}}</ref>

If the criteria are not met by the lesion during the initial examination, the individual is confined to his home for seven days, pending a follow-up examination.<ref>{{Bibleverse|Leviticus|13:4,21,26,31|HE}}</ref> If the criteria for ''tzaraath'' are again not met and the lesion has not spread, there is a difference in protocol depending on the type of lesion.
* For skin patches, another confinement period of seven days is imposed.<ref>{{Bibleverse|Leviticus|13:5|HE}}</ref>
* For boils or burns, the ''kohen'' declares it merely a צרבת (''tzarevet'', "scar") and there are no further examinations.<ref>{{Bibleverse|Leviticus|13:23, 28|HE}}</ref>
* For bald patches or lesions of the scalp or beard, another confinement period of seven days is imposed. However, prior to this second confinement period, the individual is shaved around the lesion, but not in the lesion itself;<ref>{{Bibleverse|Leviticus|13:33|HE}}</ref> according to the rabbis, a rim of two hairs surrounding the bald spot is left, to make any spreading recognizable.<ref>{{Alhatorah|Leviticus|13:33|Rashi}}; this is especially necessary according to Maimonides, who asserts that these lesions manifest as pure hair loss without any concomitant skin eruption.</ref>

After the second confinement period of seven days, those with skin patches or bald patches are re-evaluated once more.<ref name="Leviticus 13:6 and 34">{{Bibleverse|Leviticus|13:6,34|HE}}</ref> If the criteria for ''tzaraath'' have still not been met, the individual is declared pure.<ref name="Leviticus 13:6 and 34"/> He or she, must, however, wash both his or her body and garments;<ref name="Leviticus 13:6 and 34"/> due to the confinement, he or she is considered impure in some sense.<ref>{{Alhatorah|Leviticus|13:6|Rashi}}</ref>

If the lesion was declared ritually pure and later it spread, it must be shown once again to a ''kohen'', who will then pronounce it ''tzaraath''.<ref>{{Bibleverse|Leviticus|13:7–8,35–36|HE}}</ref>

If, however, the criteria for ''tzaraath'' have been met, either during the initial inspection or at either of the two follow-ups (when applicable) or even after a previous pronouncement of purity, the individual is declared impure. The individual is declared impure even if the lesion did not worsen or spread but remained the same—the skin eruption must become dimmer in appearance for it to be declared pure at the second follow-up examination.<ref>{{Bibleverse|Leviticus|13:6|HE}} and commentary of Rashi</ref>

The biblical emphasis appears to be on the ritual impurity that results from a diagnosis of ''tzaraath'', not on any possible medical danger. The commands repeatedly discuss the sufferer's "pure" or "impure" status, only rarely mentioning "healing", and no Biblical story of ''tzaraath'' appears to involve the danger of death to the afflicted person.<ref name=hulse/>

=== Impure status ===
The individual who is declared impure with ''tzaraath'' is referred to as either a ''tzarua'' (צרוע) or a ''metzora'' (מצורע).<ref>{{Bibleverse|Leviticus|13:44|HE}} and {{Bibleverse-nb|Leviticus|14:2|HE}}, respectively</ref> Such individuals must live alone outside the confines of their community, and call out ''[ritually] impure, [ritually] impure''.<ref name=lev134546>{{Bibleverse|Leviticus|13:45-46|HE}}</ref> They must tear their garments, keep their hair unkept or uncut (פרוע), and cover their upper lip;<ref name=lev134546/> these practices are expressions of mourning.<ref>{{Alhatorah|Leviticus|13:45|Rashi}}; see also {{Bibleverse|Ezekiel|24:17|HE}} where lip-covering indicates mourning.</ref> In a different interpretation, the mouth must be covered, to prevent contagion.<ref>{{Alhatorah|Leviticus|13:45|Ibn Ezra}}</ref>

A few [[Medical history|medical historians]], such as [[Arturo Castiglioni]], regard this as the first model of sanitary legislation.<ref>Arturo Castiglioni, ''A history of medicine'' (p. 71)</ref> Nevertheless, some (though not all<ref>[[Leviticus Rabbah]] 16:3 - one must distance oneself from a leper, and distance further when the wind is blowing</ref>) Talmudic laws treat ''tzaraath'' as noncontagious:<ref name="Jewish Encyclopedia">{{JewishEncyclopedia|title=Leprosy|url=https://www.jewishencyclopedia.com/articles/9774-leprosy}}</ref> non-Jewish victims of ''tzaraath'' were not considered ritually impure;<ref>Mishnah Nega'im 3:1, 11:1</ref> in special circumstances (during a [[Jewish holiday|holy day]], or for a [[bridegroom]] after his [[Jewish wedding|wedding]]) the ''kohen'''s inspection could be delayed until after the celebrations;<ref>Nega'im 3:2</ref> in cases where white hair is a sign of ''tzaraat'', if the white hairs were plucked before the inspection then the person was not declared impure.<ref>Mishnah Negaim 8:4</ref> Similarly, in the Biblical description of house-''tzaraath'', individuals are encouraged to remove their belongings from the house before the house and its contents are pronounced impure.<ref name="Leviticus 14:36"/>

=== Purification ritual ===
{{Further|Metzora (parashah)}}

Once the ''metzora'''s lesion vanishes, he is evaluated by a ''kohen'', who leaves the community to examine him. When the priest had certified that ''tzaraath'' had been cured,<ref>{{bibleverse||Leviticus|14:1–3|HE}}</ref> the biblical text requires that the formerly infected person (''metzora'') undergo a number of ritual events, some occurring immediately,<ref>{{bibleverse||Leviticus|14:4–8|HE}}</ref> and some occurring a week later.<ref>{{bibleverse||Leviticus|14:9–32|HE}}</ref>

Initially, the person took two [[kosher]] birds ({{Script/Hebrew|ציפורים}}), [[Cedrus libani|cedar]]-wood, [[Kermes (dye)|scarlet]], and [[ezov]].<ref>{{Bibleverse|Leviticus|14:4|HE}}</ref> "Living" water was placed in an earthenware vessel, over which one of the birds was slaughtered and into which the blood was allowed to run.<ref>{{bibleverse||Leviticus|14:4–6|HE}}</ref> The ''[[kohen]]'' then dipped the remaining bird and other items into the bloodied water, and sprinkled it on the ''metzora'' seven times.<ref name=lev147>{{bibleverse||Leviticus|14:7|HE}}</ref> The live bird was freed into the open field.<ref name=lev147/> The ''metzora'' washed their garments from impurity and [[tonsure|shaved off all their hair]].<ref name=lev148>{{bibleverse||Leviticus|14:8|HE}}</ref>

The ''metzora'' then waited for seven days to begin the final steps of his purification ceremony; in this period he must avoid his own home, but may mix with other people.<ref name=lev148/> On the seventh day, he again washed his garments from impurity and again shaves off all of his hair, and was then deemed pure.<ref>{{bibleverse||Leviticus|14:9|HE}}</ref> On the eighth day, he brought three animal sacrifices to the [[Temple in Jerusalem|sanctuary]]: a sin-offering of a female lamb, and a [[guilt offering|guilt-offering]] and a [[Burnt offering (Judaism)|burnt-offering]], both male lambs.<ref>{{Bibleverse|Leviticus|14:10|HE}}</ref> One who could not afford this sacrifice would instead offer birds rather than lambs for the sin-offering and burnt-offering.<ref>{{bibleverse||Leviticus|14:21–32|HE}}</ref> Blood from the slaughtered guilt-offering was placed on his right ear, right thumb and right big toe;<ref>{{Bibleverse|Leviticus|14:14|HE}}</ref> then some of the oil for the sacrifice was poured into the priest's left palm, and applied with the priest's right forefinger onto the ''metzora''{{'s}} right ear lobe, right thumb, and right big toe.<ref>{{bibleverse||Leviticus|14:15–17|HE}}</ref> The rest of the oil from the priest's palm was poured on the ''metzora'' 's head.<ref>{{bibleverse||Leviticus|14:18|HE}}</ref> Finally, the sin-offering and burnt-offering were sacrificed.<ref>{{bibleverse||Leviticus|14:10|HE}}</ref>

Some scholars speculate that the initial ritual may have originally been connected to [[sympathetic magic]], with the living bird representing the departure of ritual impurity.<ref name=peakes/> Hyssop might simply be a good implement to use for sprinkling, with cedar-wood perhaps having alleged medicinal properties.<ref name=peakes/> Alternatively, ''tzaraath'' is seen as akin to death ({{Bibleverse|Numbers|12:12|HE}}), and the use of "living" water dyed with blood (representing life: {{Bibleverse|Deut|12:23|HE}}) and scarlet dye, along with cedar and ''ezov'' which also appear in the ceremony of purification from corpse-impurity ({{Bibleverse|Numbers|19|HE}}), represent the symbolic return of the ''metzora'' to life.<ref>Yonatan Grossman, [https://www.hatanakh.com/articles/%D7%90%D7%93%D7%9D-%D7%94%D7%9E%D7%AA%D7%90%D7%91%D7%9C-%D7%A2%D7%9C-%D7%A2%D7%A6%D7%9E%D7%95 Adam mitabel al atzmo]</ref>

===Stories involving tzaraat===
The Hebrew Bible also speaks of ''tzaraath'' in several stories:
* In {{Bibleverse|Exodus|4:1–7|HE}}, when [[Moses]] stood before the [[burning bush]], he doubted that the [[Israelites]] would believe that God had sent him. God provides him with two signs to prove his mission: turning his rod into a snake and then back into a rod, and turning his hand into being stricken with ''tzaraath'' and then back again. Moses performed these signs for the elders in {{bibleverse|Exodus|4:30|HE}}.
* In Numbers 12:10, [[Miriam]] was stricken with ''tzaraath'' for her involvement in slandering Moses. [[Aaron]] asks Moses to cure her.<ref>{{bibleverse|Numbers|12:10|HE}}</ref> Moses prays for his sister and she is cured of the ''tzaraath'' but must remain in confinement for seven days. The Torah, however, does not indicate that she went through any purification process similar to what is normally required.<ref>{{Bibleverse|Numbers|12|HE}}</ref> Miriam's ''tzaraath'' is described as "like snow", perhaps less due to the white color than due to the production of skin flakes, which is common in various skin diseases.<ref name=hulse/>
* [[Naaman]], an Aramean general, suffered from ''tzaraath'' until being cured by [[Elisha]]. However, after Elisha's servant [[Gehazi]] defrauded Naaman, Gehazi and his descendants were punished with ''tzaraath''.<ref>{{Bibleverse|2 Kings|5|HE}}</ref>
* In {{Bibleverse|2 Kings|7|HE}}, four men with ''tzaraath'' were staying outside the besieged city of [[Samaria (ancient city)|Samaria]], and were the first to discover that the besieging Aramean army had fled.
* King [[Uzziah]] was stricken with ''tzaraath'' after offering incense in the Temple, a task forbidden to all except the priests.<ref>{{bibleverse|2|Kings|15:5|HE}}; {{bibleverse|2|Chronicles|26:16-21|HE}}</ref>

== Affliction of clothing ==
''Tzaraath'' can also afflict garments.<ref>{{Bibleverse|Leviticus|13:47-48|HE}}</ref> Garment ''tzaraath'' is relevant to only three materials:
# [[wool]] (Hebrew צמר)
# [[linen]] (Hebrew פשתים)
# [[leather]]: either unworked leather (עור) or finished leather (כל מלאכת עור, literally "all worked leather")

In a wool or linen garment, the ''tzaraath'' may appear uniformly throughout the fabric, or else be limited to the garment's [[weft|woof]] or to its [[warp (weaving)|warp]] (או בשתי או בערב).<ref>{{Bibleverse|Leviticus|13:48|HE}}</ref>

''Tzaraath'' appears in clothing as a greenish (ירקרק – ''yerakrak'') or reddish (אדמדם – ''adamdam'') eruption.<ref>{{Bibleverse|Leviticus|13:49|HE}}</ref> This has been interpreted as either an intense color ("the greenest of greens")<ref>{{Alhatorah|Leviticus|13:49|Rashi}}</ref> or a mild one ("less than fully green").<ref>{{Alhatorah|Leviticus|13:49|Ibn Ezra}}</ref>

Such clothing must be brought to the ''[[kohen]]'' for inspection. A garment cannot be declared impure upon initial examination; rather, it is confined for seven days, and if on the seventh day, the eruption has spread, the garment is declared impure with ''tzaraath''.<ref>{{Bibleverse|Leviticus|13:51|HE}}</ref> Subsequent to a declaration of ''tzaraath'', the garment, whether wool, linen or leather, is completely burnt in fire; if the ''tzaraath'' was confined to the woof or warp, only that need be burnt.<ref>{{Bibleverse|Leviticus|13:52|HE}}</ref>

Upon re-evaluation after the seven-day confinement, the ''kohen'' may instruct that the garment with the eruption be washed and confined once more for seven days.<ref>{{Bibleverse|Leviticus|13:54|HE}}</ref> If upon a second re-evaluation after the second seven days of confinement, the ''kohen'' sees that the eruption did not dim and did not spread, the garment is declared impure and must be completely burnt.<ref>{{Bibleverse|Leviticus|13:55|HE}}</ref>

If the second re-evaluation reveals a dimming of the eruption, the ''kohen'' tears the area with the eruption from the garment and burns the torn out portion completely.<ref>Leviticus 13:56, commentary of [[Rashi]]</ref> The torn out area is patched to allow for a reinspection of the area for return of the lesion.<ref name="Mishnah Nega'im 11:5">Mishnah ''Nega'im'' 11:5</ref> If, the eruption returns to the patch, there is no confinement period instituted and the entire garment is completely burnt;<ref>{{Alhatorah|Leviticus|13:57|Rashi}}</ref> if a lesion reappears on the garment but not on the patch, the garment must be burned but the patch can be saved.<ref>Mishnah ''Nega'im'' 11:6</ref> To recapitulate, if the lesion remained as it was after the first week of confinement, it is washed and reconfined. If it remained as it was after the second week of confinement, it is burned.<ref name="Mishnah Nega'im 11:5"/>

If, however, upon the second re-evaluation, the lesion disappears, the garment must be immersed in a ''[[mikveh]]'' (ritual bath) and is then pure.<ref>{{Bibleverse|Leviticus|13:58|HE}}, commentary of [[Rashi]]</ref>

Fabrics and clothing affected by ''tzaraath'' were required by the text to be burnt entirely,<ref>{{bibleverse||Leviticus|13:52|HE}}; {{bibleverse-nb||Leviticus|13:55|HE}}</ref> unless it was the form of ''tzaraath'' that faded after washing but came back after being torn out, in which case it could be considered ritually pure as soon as the ''tzaraath'' had gone, and it had subsequently been washed.<ref>{{bibleverse||Leviticus|13:58|HE}}</ref>

== Affliction of housing ==
The third and last type of ''tzaraath'' mentioned by the Torah affects buildings.<ref>[[Leviticus]] 14:34</ref> If an individual notices an affliction on his house, he is to inform a ''[[kohen]]''. The ''kohen'' will then command that they empty the house of all of its contents prior to his inspection; this is to prevent further financial loss, because should the house be confined, everything within it became impure as well.<ref name="Leviticus 14:36">{{Bibleverse|Leviticus|14:36|HE}}</ref>

When the ''kohen'' comes to perform the inspection, he looks for lesions on the wall that appear either intense green (ירקרקת) or intense red (אדמדמת) and that appear sunken below the [[plane (mathematics)|plane]] of the wall's surface (שפל מן הקיר, literally "lower than the wall"). If this is what he sees, the ''kohen'' exits the house and confines it for seven days.<ref>Leviticus 14:38</ref>

On the seventh day, upon re-evaluating the eruption, if the ''kohen'' sees that the eruption has spread beyond what it had been, the afflicted stones are removed, the area around the afflicted stones is scraped and both the removed stones and clay plaster are cast into a place of impurity.<ref>Leviticus 14:40-1</ref>

The void is filled with new stones and clay plaster and the house is confined for another seven days. If upon a second re-evaluation, the ''negah'' has returned after new stones have been plastered in, the ''negah'' is deemed ''tzaraath'' and the entire house must be dismantled.<ref name="Leviticus 14:36"/> If the ''negah'' does not return, the house is pronounced pure, and the same purification process mentioned in relation to ''tzaraath'' of human flesh is employed here.

''Tzaraath'' infections in houses were to be treated similarly harshly according to the biblical regulations, and didn't have any exceptions; stones showing the symptoms had to be removed, and the house had to be scraped, with the removed stones and scraped-off clay being cast into a rubbish heap outside the city,<ref>{{bibleverse||Leviticus|14:40–41|HE}}</ref> and if the infection returned once replacement stones were laid and daubed with clay, then the whole house had to be dismantled, with the rubble again going to the tip outside the city.<ref>{{bibleverse||Leviticus|14:42–43|HE}}</ref> Additionally, people who had been in a house while it was infected with ''tzaraath'' was considered ritually impure until the evening came, and anyone who had eaten or slept there had to also wash their clothes.<ref>{{bibleverse||Leviticus|14:46–47|HE}}</ref>

A house that was "healed" from ''tzaraat'' received a purification ritual virtually identical to that of a healed person, involving cedar-wood, scarlet, ''ezov'', and two birds.<ref>{{bibleverse||Leviticus|14:48–53|HE}}</ref> However, the second half of the person's purification ritual, involving Temple sacrifices, was not performed.

== In Rabbinic Judaism ==

Rabbinic tradition includes an extensive elaboration of the ''tzaraath'' laws recorded in the Bible. The rabbinic laws of ''tzaraath'' appear in [[Mishnah]] tractate [[Nega'im]].

===Laws of skin===

Rather than interpreting the biblical descriptions of ''tzaraath'' in the manner of modern doctors, [[classical rabbinical literature]] took an extremely literal view.<ref name="Jewish Encyclopedia"/> This is shown in the following laws:
* In the group of symptoms where the hair of the inflicted region has turned white, the [[Mishnah]] argues that plucking out the white hair was all that was required for the disease not to be considered ''tzaraath''.<ref>Nega'im, 8:4</ref> 
* Since the biblical text mentions ''tzaraath'' occurring where boils had previously healed, but not where unhealed boils exist, the Mishnah maintains that the appearance of the other symptoms in an unhealed boil or burn do not indicate ''tzaraath'', and that if the boil or burn subsequently heals, it still does not indicate ''tzaraath'', unless the other symptoms occur in parts of the body not previously diseased.<ref>Nega'im, 9:2</ref>
* Sores smaller than the size of a [[lentil]], those on the extremities of the body (such as the fingers, toes, ears, nose, breasts, etc.), and those that occur in hairy parts of the body, do not indicate ''tzaraath''.<ref>Nega'im 6:8, 8:1</ref>

Rabbinic literature describes additional laws regarding priest's inspection of ''tzaraath'':
* The ''kohen'' must be able to see the entirety of the lesion. Thus, if the skin eruption or bald spot wraps around either the body or body parts, or occurs at the tip of terminal body parts—any place that would preclude the observation of the entire lesion at one time (i.e. wrapping around the torso, scalp or arm, or occurring at the tip of a finger or toe) – there can be no declaration of ''tzaraath''.<ref>Mishnah ''Nega'im'' 6:7</ref>
* In a similar vein, a ''kohen'' who is blind in one eye or who cannot see well may not perform the inspections.<ref>Mishnah ''Nega'im'' 2:3</ref> An eligible ''kohen'' may inspect anyone, including his relatives, except himself.<ref>Mishnah ''Nega'im'' 2:5</ref> Even a non-''kohen'' may perform the inspection if they are proficient in the laws of ''nega'im'', but only a ''kohen'' may declare purity or impurity. A non-''kohen'' examiner may inform an accompanying inexpert ''kohen'' of his determination that a ''negah'' is or is not ''tzaraath'' and the ''kohen'' declares "purity" or "impurity".<ref name=negaim3p1>Mishnah ''Nega'im'' 3:1</ref>
* ''Nega'im'' do not render impurity on parts of the body that are naturally concealed by other parts of the body according to specific regulations. For skin eruptions on the legs, men are inspected standing as though they are hoeing and women standing as though they are rolling dough. For eruptions on the arms, men raise their arms as though they are picking olives and women raise their arms as though they are weaving or spinning.<ref name="Mishnah Nega'im 2:4">Mishnah ''Nega'im'' 2:4</ref>
* ''Nega'im'' do not render [[gentile]]s impure.<ref name=negaim3p1/>
* A groom is exempt from visiting the ''kohen'' until the eighth day after his wedding for any ''nega'im'' on his flesh, garments or house. Similarly, there are no inspections carried out on the days of [[Passover]], [[Shavuot]] or [[Sukkot]].<ref>Mishnah ''Nega'im'' 3:2</ref>
* Even on the days when inspections are performed, they are only allowed for two hours each day: during the fourth and eighth hour of the day (corresponding roughly to 9–10 AM and 2–3 PM).<ref>Mishnah ''Nega'im'' 2:2</ref>

If someone cuts off some skin or a part of his body to remove a ''tzaraat'' lesion, he becomes impure, even if he had no confirming signs. He may become pure only after another lesion forms.<ref name=negaim7p5>Mishnah ''Nega'im'' 7:5</ref> The exception is when a lesion appears on the tip of the [[foreskin]] and is cut off during [[circumcision]], which is permitted, because a positive commandment overrides a negative commandment.<ref name=negaim7p5/>

Additional laws relate to the sacrifice offered at the ''metzora'''s recovery:
* The sprinkling was done onto the back of his hand, or else (according to another opinion) on his forehead.<ref name=mishna141>Mishnah ''Nega'im'' 14:1</ref>
* The slaughtered bird was buried in the presence of the ''metzora''.<ref name=mishna141 />
* When the recovered ''metzora'' is shaved, this shaving excludes places similar to those in which ''nega'im'' are not subject to impurity.<ref name="Mishnah Nega'im 2:4"/>
* The dabbing of sacrificial blood on the recovered ''metzora'' caused some complication, because the ''metzora'' was not allowed into Temple grounds prior to his purification process, while the blood of the offering was not allowed out of the Temple grounds. To reconcile this dilemma, the ''metzora'' stuck these body parts through the gateway one at a time to receive the blood. The same was done with the oil from the flour offerings of the ''metzora''. If the ''metzora'' lost any of these body parts after he was ready for purification, he could never obtain purification.<ref>Mishnah ''Nega'im'' 14:9</ref>
* The remaining portion of the olive oil from the purification offering, called in Hebrew ''log shemen shel metzora'', is retained by the ''kohen'' at the completion of his service. This portion is listed as one of the [[twenty-four kohanic gifts]].

===Laws of clothing===
There are a number of limitations to ''tzaraath'' as it applies to clothing:
* Clothing belonging to a [[gentile]] are insusceptible to ''tzaraath''.
* Only sheep's wool is susceptible to a ''negah'' of ''tzaraath'', although an even mixture of sheep's wool and another type of wool (camel's wool, for example) can be afflicted.<ref name="Mishnah Nega'im 11:2">Mishnah ''Nega'im'' 11:2</ref> In a similar vein, a mixture of plant fibers containing linen is insusceptible unless it is at least half linen.<ref name="Mishnah Nega'im 11:2"/>
* The leather referred to by the Torah does not include the hides of marine animals.<ref>Mishnah ''Nega'im'' 11:1</ref>
* The fabric of wool or linen or leather article cannot be rendered impure by ''tzaraath'' if it is artificially dyed. If, however, the item is naturally colored (such as wool from a black sheep), it can be rendered impure.<ref>Mishnah ''Nega'im'' 11:3</ref>

===Laws of houses===
At least two afflicted stones are necessary for removal of any stones and at least two new stones must be used to fill the void.<ref name="Mishnah Nega'im 12:6">Mishnah ''Nega'im'' 12:6</ref> If the afflicted wall is shared by two houses owned by two neighbors, both neighbors must help to remove the afflicted stones, scrape and place the new stones, but only the owner of the house whose interior was afflicted performs the replastering. It is from this ruling that the [[proverb]] ''Oy l'rasha, oy l'scheino'' (אוי לרשע אוי לשכנו, "Woe to the wicked! Woe to his neighbor!") originates.<ref name="Mishnah Nega'im 12:6"/>

There are numerous limitations put on the ''tzaraath'' that afflicts houses:
* The house of a [[gentile]] is insusceptible to ''tzaraath''.
* Only houses that possess four walls and four corners are susceptible. Similarly, only those houses that rest on the ground are susceptible, to the exclusion of those that are suspended above ground or are built on a boat.<ref>Mishnah ''Nega'im'' 12:1</ref>
* ''Tzaraath'' only affects houses that are built entirely out of stones, wood and clay plaster. If any of the four walls are built or internally overlaid with [[marble]], natural outcropping of rock, [[brick]] or earthen soil, that wall is insusceptible to ''tzaraath'', and a house cannot be rendered impure unless all four walls are susceptible.<ref>Mishnah ''Nega'im'' 12:2</ref>
* Two storey houses are treated as two distinct houses and the beams that serve as the floor of the upper storey and the roof of the lower storey are allowed to remain with whichever house remains.<ref>Mishnah ''Nega'im'' 13:3</ref>
* Houses are the only buildings that are susceptible to ''tzaraath'' (not, for example, barns or cattle stalls) and only houses that exist within the region of land originally divided among the 12 tribes, because the verse refers to ''beis eretz achuzaschem'' (בית ארץ אחזתכם, "a house of the land of your inheritance"); this also excludes houses in [[Jerusalem]], because it was not given as an inheritance to any one tribe, but rather held jointly by all of [[Children of Israel|Israel]].<ref>Mishnah ''Nega'im'' 12:4, commentary of [[Pinchas Kehati]]</ref>

===Interpretations===
The Talmud, and most historic Jewish literature (for example Rabbi [[Samson Raphael Hirsch]]), regards ''tzaraath'' as a [[punishment]] for [[sin]], and argue that cure from ''tzaraath'' only comes about through [[Repentance in Judaism|repentance]] and forgiveness. The verse itself arguably suggests this, as it directs those who find themselves afflicted to seek out a ''Kohen'' (priest) and not a doctor, even though generally the Torah encourages seeking medical treatment from doctors.<ref>[[Book of Exodus|Exodus]] 21:19</ref>

The Talmud lists seven possible causes for ''tzaraath'': ''[[lashon hara]]'' ("evil tongue", i.e. malicious [[gossip]]), [[murder]],  a vain [[oath]], illicit sexual intercourse, [[pride]], [[theft]], or [[miser]]ly behavior.<ref name=a16/> Elsewhere, the connection with gossip is supported by the wordplay ''metzora'' (leper) - ''motzi [shem] ra'' (slanderer),<ref>[https://www.sefaria.org.il/Vayikra_Rabbah.16.2?lang=bi&with=all&lang2=en Vayikra Rabbah 16:2]</ref> and by the example of [[Miriam]] who was punished with ''tzaraath'' after speaking negatively of Moses.<ref>[[Deuteronomy Rabbah]] [https://www.sefaria.org/Devarim_Rabbah.6.8 6:8]</ref>{{efn|See also {{Bibleverse|Daniel|3:8|HE}} and 6:25, where "eating their piece [of flesh?]" is a metaphor meaning to "accuse them maliciously",<ref>[https://mg.alhatorah.org/Dictionary/7170 Dictionary: קרץ]</ref> paralleling ''tzaraat'' which is said to "eat one's flesh",<ref>{{Bibleverse|Numbers|12:12|HE}}</ref> and the possible similar usage in {{Bibleverse|Psalms|27:2|HE}}}} One modern source asserts that as a "physical manifestation of a spiritual malaise," ''tzaraath'' is a "divine retribution for the offender's failure to feel the needs and share the hurt of others."<ref>[[Artscroll]] [[Tanakh]], [[Leviticus]] 13, commentary. page 272.</ref>

In particular, [[Midrash Rabbah]] sees the different types of ''tzaraath'' as increasing levels of punishment, which could be curtailed at any stage if repentance was made:
#the first stage in the Rabbah's view was the infection of homes, and if repentance came here it only required removal of the affected stones for a cure.
#in the second stage, the entire house must be torn down as the ''tzaraath'' would not go away, and the infection came upon one's clothes; if repentance came here it required only washing of the clothes for a cure.
#in the third stage of Rabbah's scheme, the clothes must be burnt, and the infection enters the person's skin; if repentance occurs here then purification could occur.
#in the fourth stage, which only occurs when the person has completely refused to repent, the person is forced to dwell alone.

Each Biblical victim of ''tzaraath'' is stated to have received the condition due to some violation of biblical laws,<ref name="Jewish Encyclopedia"/> including [[Joab]] for the murder of [[Abner]] (whose blood was shed deceitfully in time of peace), [[Gehazi]] (for 1. rebelling against Elisha's decision to not take payment for a miracle God had worked 2. working deceitfully to take the payment 3. lying to Elisha, saying he hadn't done the thing); and [[Uzziah]] for burning incense in the Temple (a ritual whose performance was limited to priests).

Other [[classical rabbinical literature|classical rabbinical writers]] saw ''tzaraath'' of houses as having a practical benefit. According to one, as well as being a punishment for miserliness, it also demonstrated that the house owner was lying, if they had said they did not own certain objects neighbours had asked to borrow, since the biblical regulations require the house owner to take all their possessions outside prior to confinement.<ref name="Leviticus 14:36"/> On the other hand, [[Rashi]] states that ''tzaraath'' of houses was a reward for the homeowner, arguing that the [[Israelite]] homes had previously been those of [[Canaanites]], who had hidden their valuables in the walls; the ''tzaraath'' required the house owner to remove the bricks, and so find the treasures hidden there.<ref>{{Alhatorah|Leviticus|14:34|Rashi}}, based on [[Leviticus Rabbah]] 17:6</ref>

The items used in the purification ritual &ndash; birds, [[Cedrus libani|cedar]] wood, and worm &ndash; were specifically included to deliver a message to the ''metzora''. The sin most associated with ''tzaraath'' is ''[[lashon hara]]'';<ref name=a16>[[Babylonian Talmud]], ''[[Arachin]]'' [https://www.sefaria.org/Arakhin.16a.5?lang=bi&with=all&lang2=en 16a]</ref> to speak derogatorily about others to one's friends is likened to birds, who chatter endlessly.<ref name=a16/> Similarly, the one who speaks ill of others is haughty, holding himself or herself high above others, like the tall cedar. To be healed, the ''metzora'' must erase arrogance, making themselves lowly like a worm. This is a play on words—the word ''tola'as'' (תולעת) means both "red" and "worm" – as well as hyssop.

===Current practice===
The laws of ''tzaraath'' are not practiced by contemporary Jews. Several approaches have been suggested to explain why this is the case:<ref name=vaynman>Efraim Vaynman, [https://www.torahmusings.com/2022/04/contemporary-tzaraat-2/ Contemporary Tzaraat?]</ref>
* One could contract ''tzaraath'' nowadays, but this is practically irrelevant, because in the absence of a Temple it is impossible to perform the ''tzaraath'' purification ritual, and because since the exile there is no commandment to remove ''tzaraath'' sufferers from the camp.<ref name=vaynman/>
* One cannot formally acquire the status of ''tzaraath'' nowadays, since there are currently no priests with proven priestly lineage who can declare this status, or else because current priests do not have the necessary tradition or knowledge to determine the status, or because the [[Temple robes]] which must be worn while declaring the status are unavailable.<ref name=vaynman/>
* In times of exile ''tzaraath'' is not regarded as a direct Divine punishment with a ritual remedy, but rather as a normal physical disease whose treatment is purely medical.<ref name=vaynman/>

== Modern medical interpretations ==
[[File:Buki ben yogli.jpg|thumb|250px|[[Ukrainian Jew|Ukrainian-Jewish]] born [[Yehuda L. Katzenelson]], (1846–1917) devoted a portion of his work on talmudic medicine to the analysis of the parallels between [[vitiligo]] and biblical ''tzaraath'', he concluded that the [[chazal]]ic consensus was that they are synonymous.]]

=== ''Tzaraath'' of the skin ===
Scholars suspect that the descriptions of ''tzaraath'' of the skin actually refer to a number of different [[skin diseases]],<ref name=peakes/><ref name="Wycliffe">''Wycliffe Bible Encyclopedia''</ref><ref>[http://www.asa3.org/ASA/PSCF/1959/JASA3-59Spinka.html Dr. Harold Spinka, M.D.]</ref> which, owing to the undeveloped state of medical science at that period, were not distinguished.<ref name="Jewish Encyclopedia"/> A wide range of diseases, infections, and skin conditions known to modern medicine have been suggested as [[differential diagnosis]] of ''tzaraath'', including [[psoriasis]], [[seborrhoeic dermatitis]], [[favid]], [[dermatophyte infections]], [[nummular dermatitis]], [[atopic dermatitis]], [[pityriasis rosea]], [[crusted scabies]], [[syphilis]], [[impetigo]], [[sycosis barbae]], [[alopecia areata]], [[boil]], [[scabies]], [[lichen simplex chronicus]], [[scarlet fever]], [[lupus erythematosus]], [[lichen sclerosus et atrophicus]], [[folliculitis decalvans]], [[morphea]], [[sarcoidosis]], and [[lichen planopilaris]].<ref name=andy/>

Of the particular situations that Leviticus describes as being ''tzaraath'',
* the whitening of the skin over the whole body with sores, is considered by scholars to be most indicative of [[psoriasis]]<ref name="EncBib"/><ref name=peakes>''[[Peake's commentary on the Bible]]''</ref><ref>{{cite journal |vauthors=Shai A, Vardy D, Zvulunov A |title=[Psoriasis, biblical afflictions and patients' dignity] |language=he |journal=Harefuah |volume=141 |issue=5 |pages=479–82, 496 |year=2002 |pmid=12073533 }}</ref>
* the spreading of sores is regarded by scholars as most symptomatic of [[impetigo]]<ref name=peakes/>
* the spreading of swellings or spots in a burn injury, according to scholars, is most probably a result of [[erysipelas]]<ref name=peakes/>
* in regard to subcutaneous disease where the hair has turned white
** the additional presence of swellings or spots in a burn injury are thought by scholars most likely to be [[Cutaneous leishmaniasis|tropical sore]]s<ref name=peakes/>
** the additional presence of bodily sores, and swellings or spots where there previously had been a boil, is one of the classical symptoms of [[leprosy]]<ref name=peakes/>
** the additional presence of sores on the head or chin is thought by scholars to most probably indicate the presence of [[ringworm]]<ref name="EncBib"/><ref name=peakes/>
* a white spot in the head or beard hair, called a ''netek'', may be [[favus]].<ref name=hulse>Hulse, E. V. (1976). The Nature of Biblical “leprosy” and the use of Alternative Medical terms in Modern translations of the Bible. Medical History, 20(02), 203.</ref>

Russian pathologist [[Gregory Minh]] discovered that leprosy is [[Contagious disease|contagious]]; assuming that biblical ''tzaraat'' is non-contagious, he therefore concluded that ''tzaraath'' is in fact [[vitiligo]]. Similarly, [[Reuven Kalisher]] suggested that vitiligo is the most likely candidate for biblical ''tzaraath'', as it is non-contagious, causes the hair located within the discolored area to turn white (also known as [[poliosis]] or [[leukotrichia]]), and can grow in size within a week to two-week period. [[Yehuda L. Katzenelson]] added that while vitiligo lacks the {{clarify span|''safachat''|explain=translation?|date=October 2022}} characteristic of biblical ''tzaraat'', the [[Mishna]] ([[Negaim]], chapter 1) also does not mention this characteristic. However Katzenelson concluded his analysis by listing many unanswered difficulties with Minh's opinion.<ref>HaTalmud V’Chochmat HaRefuah (Berlin 1928 p. 336-8) [http://hebrewbooks.org/20797 title at hebrewbooks.org], p. 339-341</ref>

One recent author suggests that ''tzaraath'' in fact corresponds to no naturally occurring disease: "By establishing rigid criteria, almost everyone who was examined was destined to fail to meet the criteria for diagnosis. Therefore this passage was designed to integrate persons with disfiguring skin diseases back into society, not to excommunicate them as was the practice in neighbouring societies."<ref name=kaplan/>

=== Similar conditions not considered ''tzaraath'' ===
In addition to simple [[rash]]es,<ref>{{bibleverse||Leviticus|13:4–6|HE}}</ref> [[inflammation]]s,<ref>{{bibleverse||Leviticus|13:23|HE}}</ref> and [[Swelling (medical)|swelling]]s,<ref name="bibleverse||Leviticus|13:28">{{bibleverse||Leviticus|13:28|HE}}</ref> the biblical text mentions a number of other conditions that could be confused with ''tzaraath''. Among other situations the text considers harmless are the appearance of dull white spots,<ref>{{bibleverse||Leviticus|13:38–39|HE}}</ref> white patches of skin without sores,<ref>{{bibleverse||Leviticus|13:12–13|HE}}</ref> and baldness without sores;<ref name="bibleverse||Leviticus|13:28"/> the latter two of these are thought by scholars to most probably refer to [[vitiligo]] and [[alopecia]], respectively,<ref name=peakes/> and the Bible remarks that the former – the dull white spots – are merely a form of [[freckles]].<ref>{{bibleverse||Leviticus|13:39|HE}}</ref> The symptoms that the text considers to be indicative of disease include those of the spread of superficial swellings or spots (where there had previously been a boil),<ref>{{bibleverse||Leviticus|13:21–22|HE}}</ref> and those of reddish-white sores in areas of baldness;<ref>{{bibleverse||Leviticus|13:42–44|HE}}</ref> the former condition is identified by the Bible as ''plague'', and scholars regard its symptoms as pointing to a [[diagnosis]] of [[smallpox]],<ref name=peakes/> while the latter is unidentified in the biblical text, but considered by scholars to indicate [[favus]].<ref name=peakes/>

=== In clothing fabrics ===
In addition to infecting the skin, ''tzaraath'' is described by Leviticus as being able to infect historically common clothing fabrics, specifically [[wool]], [[linen]], and [[leather]].<ref>{{bibleverse||Leviticus|13:47–48|HE}}</ref> The biblical description of ''tzaraath'' in such fabrics is strikingly analogous to that of ''tzaraath'' in the skin,<ref name="Jewish Encyclopedia"/> with, for example, spreading of the infection being tested for by isolating the fabric in question for first 7 days.<ref name=lev13p5051>{{bibleverse||Leviticus|13:50–51|HE}}</ref> The principal symptoms are described as being green or red spots,<ref>{{bibleverse||Leviticus|13:49|HE}}</ref> which spread within a week,<ref name=lev13p5051/> or that do not change appearance at all after a fortnight, having been washed after the first week,<ref>{{bibleverse||Leviticus|13:53–54|HE}}</ref> or that return a week after having been torn out, if they also had faded with washing prior to being torn out.<ref>{{bibleverse||Leviticus|13:56–57|HE}}</ref> These descriptions are regarded by scholars as most probably indicative of certain [[Mold (fungus)|mould]]s,<ref name="EncBib"/><ref name=peakes/><ref name="Wycliffe"/><ref>{{cite journal |vauthors=Heller RM, Heller TW, Sasson JM |title=Mold: "tsara'at," Leviticus, and the history of a confusion |journal=Perspect. Biol. Med. |volume=46 |issue=4 |pages=588–91 |year=2003 |pmid=14593226 |url=http://muse.jhu.edu/cgi-bin/resolve_openurl.cgi?issn=0031-5982&volume=46&issue=4&spage=588&aulast=Heller |doi=10.1353/pbm.2003.0085|s2cid=7955156 |hdl=1803/7482 |hdl-access=free }}</ref> and especially matching infections by ''[[Penicillium]]'' (the [[fungus]] that produces [[penicillin]]).<ref name="EncBib"/>

=== In houses ===
[[File:WestendMoldyLivingroom.jpg|150px|thumb|right|Mildew infecting a flat]]
[[File:Hausschwamm.jpg|thumb|200px|Dry rot]]
The biblical text also describes ''tzaraath'' as infecting the walls of houses;<ref>{{bibleverse||Leviticus|14:34|HE}}</ref> the symptoms it describes are depressions in the wall, which are green or red,<ref>{{bibleverse||Leviticus|14:37|HE}}</ref> and spread over a period of seven days.<ref>{{bibleverse||Leviticus|14:38–39|HE}}</ref> The description is regarded by scholars as again being strikingly similar to the wording of the description of ''tzaraath'' infections in the skin,<ref name="Jewish Encyclopedia"/> but still somewhat obscure;<ref name="EncBib"/> it would seem to fit some form of fungal growth,<ref name=peakes/> especially [[dry rot]], which produces yellowish-green and reddish patches on walls.<ref name="EncBib"/>


==Notes==
{{notelist}}

== References ==
{{Reflist}}

== External links ==
* [http://rchaimqoton.blogspot.com/2006/02/tzaraas_24.html Tzara'as] (from [http://rchaimqoton.blogspot.com Reb Chaim HaQoton])
* [http://www.jbooks.com/interviews/index/IP_Cohen_Tzaraat.htm A Rough Guide to ''Tzaraat'' by Joshua Cohen]
* [https://archive.today/20130218010206/http://www.cairn.info/revue-corps-2008-2-p-33.htm?WhatU=barg%C3%A8s&Auteur=&doc=&ID_ARTICLE=CORP_005_0033 Impureté, contagion et alliance à travers la lèpre, Tsara'at ]

[[Category:Jewish ritual purity law]]
[[Category:Hebrew words and phrases in Jewish law]]
[[Category:Positive Mitzvoth]]
[[Category:Negative Mitzvoth]]