“…Therapies may include anthralin, minoxidil, psoralen, and ultraviolet A (PUVA) therapy, and topical or systemic corticosteroids. 10,12,13 Because of the multifactorial etiology and uncertain pathogenesis of alopecia areata, many of these treatments have a high failure rate. 10 When a diagnosis of alopecia areata is entertained, it is imperative to consider other causes of hair loss, such as alopecia induced by collagen diseases, infection, syphilis, thyroid disease, trichotillomania, and deficiencies of either iron or zinc.…”