Disorders of Nails and Hair Diagnosis
What's your diagnosis?
Alopecia areata. The children pictured in these two figures are typical of the most common presentation of alopecia areata. There is usually a history of the abrupt onset of hair loss in one or several circumscribed round or oval patches. There is no history of pruritus or scaling. The occasional association of alopecia areata with diseases such as lymphocytic thyroiditis and vitiligo suggests a possible autoimmune etiology.