[Disappointing results with dinitrochlorobenzene in alopecia areata (author's transl)].

22 patients suffering from long-standing alopecia areata totalis or fere totalis were treated with dinitrochlorobenzene (DNCB) locally. No hair growth was induced in patients with total alopecia, but 3 out of 11 patients with moderate forms showed cosmetically acceptable regrowth. The possible causes of these comparatively poor results are discussed.