They do usually go away by ages two to f...

me too - August 29th, 2005 1:26 PM
 [Original Comment]

They do usually go away by ages two to four. Some take longer to fade away, but will fade away by the time they hit puberty. "Mongolian spot is a hereditary developmental condition caused by entrapment of melanocytes in the dermis during their migration from the neural crest into the epidermis" http://www.nlm.nih.gov/medlin
eplus/ency/article/001472.htm

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