Abstract
Congenital triangular alopecia (CTA) is a rare disorder with incidence of 0.11% in dermatological examinations. It presents as triangular, mostly unilateral, noncicatricial type of alopecia on the temporal region of the scalp. It is usually under reported due to its asymp-tomatic and nonprogressive nature. Diagnosis is clinical, aided by a classification proposed by some Authors and dermoscopy. It should be considered as a differential diagnosis in cases of nonscarring alopecia mainly alopecia areata (AA), with which it is often confused. This prevents unnecessary use of topical/intralesional corticosteroids, main treatment for AA. Two cases of CTA in 1 ½ and 2 year old girls are reported to highlight this rare entity.
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