<unk>  is likely to improve in circumstances where a known cause is removed. For example, obesity-related<unk>  will improve with weight loss, and drug-induced<unk>  is likely to resolve when the drug is ceased. Hereditary variants may or may not fade with age, and malignancy-associated variants may, after a malignancy is removed, fade.
Acanthosis nigricans
Metabolic syndrome
Hypertrichosis
Green nails
Xanthosis
Blue nails
Hypertrichosis cubiti
Generalized lentiginosis