Alopecia areata is
hair loss caused when the immune system attacks
hair follicles, where hair growth begins. Contact immunotherapy may be the most effective treatment for severe alopecia areata.footnote 1 A common medicine used is
DPCP, a liquid, is "painted" on the scalp once a week. The
concentration of the solution is increased at each treatment session until a
allergic reaction occurs. Hair growth may appear
within 3 months of beginning treatment.
Hague J, Berth-Jones J (2010). Alopecia areata. In MG Lebwohl et al., eds., Treatment of Skin Disease: Comprehensive Therapeutic Strategies, 3rd ed., pp. 31–35. Edinburgh: Saunders Elsevier.
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