Psoriasis is a T-cell mediated disorder that shares many immunologic features with alopecia areata. Accordingly, treatments that are effective in psoriasis often prove to be beneficial in alopecia areata. Anthralin, topical and intralesional steroids and cyclosporine are among several therapeutic agents that have efficacy in both disorders. Based on the impressive therapeutic responses seen in those with psoriasis treated with alefacept, a similarly beneficial outcome is tentatively anticipated with treatment of those with alopecia areata.