Bahloul, E Hydroxychloroquine-induced hyperpigmentation in systemic diseases: prevalence, clinical features and risk factors: a cross-sectional study of 41 cases. [electronic resource] - Lupus Oct 2017 - 1304-1308 p. digital Publication Type: Journal Article ISSN: 1477-0962 Standard No.: 10.1177/0961203317700486 doi Subjects--Topical Terms: AdultAnticoagulants--administration & dosageAntimalarials--administration & dosageAntirheumatic Agents--administration & dosageCross-Sectional StudiesFemaleHumansHydroxychloroquine--administration & dosageHyperpigmentation--chemically inducedLupus Erythematosus, Systemic--drug therapyMaleMiddle AgedPlatelet Aggregation Inhibitors--administration & dosagePrevalenceRisk FactorsSurveys and QuestionnairesTime FactorsYoung Adult