To verify and compare the therapeutic efficacy and safety of superficial cryotherapy using dimethyl ether and propane (DMEP) mixture vs. microneedling in the treatment of mild scalp alopecia areata (AA). In a prospective randomized single-blinded clinical trial, 80 patients with clinically evident scalp mild AA were randomly assigned into two groups of 40 patients each. Group (1) was treated by ...
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