title: Photo quiz. Blue-gray centrofacial hyperpigmentation.
authors: Instituto di Scienze Dermatologiche, Università degli Studi di Siena, Policlinico Le Scotte, Siena, Italy.
authors: P
authors: P
authors: Rubegni
authors: G
authors: G
authors: de Aloe
authors: E
authors: E
authors: Maritati
authors: S
authors: S
authors: Mondillo
mesh_terms: D000368:Aged; D000638:Amiodarone / Q000009:adverse effects*; D000889:Anti-Arrhythmia Agents / Q000009:adverse effects*; D003937:Diagnosis, Differential; D005145:Face; D006801:Humans; D008297:Male; D010859:Pigmentation Disorders / Q000139:chemically induced*
chemical_list: D000889:Anti-Arrhythmia Agents; D000638:Amiodarone