(1)light complexion / freckler;
(2) sun exposure (that long-ago bad sunburn as a kid or teen is the greatest risk);
(3) dysplastic nevus syndrome
(4) total number of benign pigmented nevi >2 mm diameter (5-10 mm, etc., rules vary; xeroderma pigmentosum, etc.;
(5) having ever had a really bad (blistering) sunburn.
(6) a few other familial syndromes
Monday, January 15, 2007
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