title: Toenail disorders.
abstract: The nail unit provides clues to neoplasms and systemic disease. It also may be prominent as a site for fungal and bacterial infections. Primary dermatologic disorders present a broad spectrum of nail changes. The complete physician, regardless of his field, needs to be alert to the often significant manifestations of the abnormal nail as a signal to important pathology.
mesh_terms: D006801:Humans; D008010:Lichen Planus / Q000150:complications; D008659:Metabolic Diseases / Q000150:complications; D009181:Mycoses / Q000503:physiopathology; D009260:Nail Diseases / Q000175:diagnosis / Q000209:etiology* / Q000473:pathology; D009262:Nails / Q000033:anatomy & histology; D009263:Nails, Ingrown / Q000209:etiology / Q000628:therapy; D009369:Neoplasms / Q000175:diagnosis; D014009:Onychomycosis / Q000188:drug therapy / Q000503:physiopathology; D011565:Psoriasis / Q000150:complications / Q000628:therapy; D014034:Toes