title: Externally and internally caused skin problems of aging.
mesh_terms: D000368:Aged; D000375:Aging; D002280:Basal Cell Carcinoma / Q000209:etiology / Q000628:therapy; D003872:Dermatitis / Q000209:etiology / Q000628:therapy; D003875:Drug Eruptions / Q000209:etiology / Q000628:therapy; D006801:Humans; D007642:Keratosis / Q000209:etiology / Q000628:therapy; D007911:Lentigo / Q000209:etiology / Q000628:therapy; D008875:Middle Aged; D010391:Pemphigoid, Bullous / Q000188:drug therapy / Q000209:etiology; D012871:Skin Diseases / Q000209:etiology* / Q000628:therapy; D012878:Skin Neoplasms / Q000209:etiology / Q000628:therapy