The contact allergens found to be beneficial in the alopecia areata include following except- (AIIMS May 2014)
|C||Gamma benzene hexachloride|
Gamma benzene hexachloride
Contact immunotherapy is well documented treatment for alopecia areata. The contact allergens that have been used in the treatment of alopecia areata include dinitrochlorobenzene (DNCB), squaric acid dibutylester (SADBE) and diphenylcyclopropenone (DPCP).