title: Contact urticaria from rifamycin.
mesh_terms: D003875:Drug Eruptions / Q000209:etiology*; D006801:Humans; D007871:Leg Ulcer / Q000188:drug therapy; D012294:Rifamycins / Q000009:adverse effects* / Q000627:therapeutic use; D014581:Urticaria / Q000139:chemically induced*
chemical_list: D012294:Rifamycins