Hyperpigmentation News In dermatology, hyperpigmentation is the darkening of an area of skin or nails caused by increased melanin. Hyperpigmentation may be caused by sun damage, inflammation from acne, or other skin injuries.[ http://www.naturalelements.co.uk/hyperpigmentation-index/ http://blogs.law.harvard.edu/tech/rss Tue, 16 Jan 2007 17:16:15 +0000 Tue, 16 Jan 2007 17:15:41 +0000</