Most moles are benign throughout the course of one’s life, but it is important to recognize that there are atypical-appearing or Dysplastic Moles (Nevi) and to recognize that in some cases a malignant melanoma may arise within previously normal-looking moles.
Dysplastic nevi are a fairly common type of mole and are hereditary. They generally do not itch, burn or become painful and are characterized by any one of a number of irregular clinical features and an irregular appearance under the microscope.
These moles do not all develop into malignant melanomas, but some may carry a higher risk. Sun exposure can lead to development of new moles or changes in existing moles, and may increase the risk of malignant melanoma. Regular inspection of moles is the best way to become aware of a potential problem.