Intermittent rhythmic delta activity
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Template:Short description Intermittent rhythmic delta activity (IRDA) is a type of brain wave abnormality found in electroencephalograms (EEG).[1]
Types
It can be classified based on the area of brain it originates from:
- frontal (FIRDA)
- occipital (OIRDA)
- temporal (TIRDA)[2]
It can also be
- Unilateral
- Bilateral
Cause
It can be caused by a number of different reasons, some benign, unknown reasons, but also are commonly associated with lesions, tumors, and encephalopathies.[3] Association with periventricular white matter disease and cortical atrophy has been documented and they are more likely to show up during acute metabolic derangements such as uremia and hyperglycemia.[4]
Diagnosis
References
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