Case in point. Generalized argyria.
Fred
H L
HL
University of Texas Health Science Center at Houston.
D000368:Aged; D000369:Aged, 80 and over; D001129:Argyria / Q000175:diagnosis* / Q000209:etiology; D001706:Biopsy; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D012880:Skin Pigmentation