title: Pigmentation induced by quinidine therapy.
abstract: Abnormalities of pigmentation are a well-known side effect of antimalarial therapy. Quinidine, an antiarrhythmic agent, is structurally related to the common antimalarials but, to our knowledge, has not been associated with pigmentary abnormalities. We report a case of localized blue-gray pigmentation, clinically and histologically identical to antimalarial-induced pigmentation, in a patient receiving quinidine therapy.
mesh_terms: D000368:Aged; D006801:Humans; D008297:Male; D010859:Pigmentation Disorders / Q000139:chemically induced* / Q000473:pathology; D011802:Quinidine / Q000009:adverse effects*; D012867:Skin / Q000473:pathology
chemical_list: D011802:Quinidine