title: Contact urticaria to DNCB.
mesh_terms: D000328:Adult; D000506:Alopecia Areata / Q000188:drug therapy; D004137:Dinitrochlorobenzene / Q000009:adverse effects* / Q000627:therapeutic use; D006801:Humans; D008297:Male; D009578:Nitrobenzenes / Q000009:adverse effects*; D014581:Urticaria / Q000139:chemically induced*
chemical_list: D004137:Dinitrochlorobenzene; D009578:Nitrobenzenes