41355fb4_Alopecia___Derm101__Diagnosis
[Key clinical features] Coin-shaped (nummular) patches of non-inflammatory hair loss; exclamation hairs; may involve the entire scalp (totalis) or body (universalis) [Pathophysiology] Likely autoimmune; often associated with autoimmune or autoinflammatory medical conditions (such as autoimmune thyroid disease) [Diagnostic findings] Lymphocytic non-scarring alopecia, with collections of lymphocytes at terminal hair follicles [Treatment] Intralesional triamcinolone 10mg/cc for isolated lesions PUVA Anthralin Topical immunotherapy (such as DCNB) [Diagnosis] 
Alopecia areata
Alopecia - Derm101
Diagnosis