title: Nail pigmentation abnormalities. Their importance and proper examination.
abstract: The study of abnormal nails (onychopathology) can contribute considerably to the art of diagnostic medicine. Nail pigmentation is an important facet of onychopathology. Pigmentation abnormalities may suggest general disease and in some cases indicate a specific diagnosis. Their recognition may also be valuable in following the side effects of treatment.
mesh_terms: D006801:Humans; D009260:Nail Diseases / Q000175:diagnosis / Q000209:etiology*; D010808:Physical Examination; D010859:Pigmentation Disorders / Q000175:diagnosis / Q000209:etiology*