Yes and more: Melanoma may develop in an existing mole in which case one may see change in size, shape, border, pigmentation, bleeding, itchiness and ulceration etc. Melanoma can develop in normal skin and mucus membranes as well. See this site for more info. http://www.mayoclinic.org/diseases-conditions/melanoma/basics/definition/con-20026009
Answered 9/7/2014
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ABCD's: Remember your abcd's when thinking of melanoma. Look for moles with asymmetry boarders that are irregular color differences within the same mole diameter greater than 6mm also any new mole or old that starts to itch, bleed or ulcerate should be of concern. Another rule is the ugly duckling rule. Which refers to a mole that looks distantly different from the others on your body.
Answered 5/30/2017
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