In patients with cutaneous melanoma, red and blond hair, having more than 50 cherry angiomas and more than 100 common melanocytic nevi significantly increased the risk for developing a second melanoma, according to data published in the Journal of The European Academy of Dermatology and Venereology.

Researchers conducted a longitudinal case-case study of information prospectively collected from 1447 patients (>18 years, median age of 57 years at diagnosis) with sporadic cutaneous melanoma at the Department of Dermatology of the Instituto Valenciano de Oncologia (IVO) in Spain from January 2000 to October 2015.