Hypermelanoses

《英文msh词典》Hypermelanoses
[入口词] Hypermelanoses
[主题词] Hyperpigmentation
[英文释义] Excessive pigmentation of the skin,usually as a result of increased epidermal or dermal melanin pigmentation,hypermelanosis. Hyperpigmentation can be localized or generalized. The condition may arise from exposure to light,chemicals or other substances,or from a primary metabolic imbalance.