The majority of the population has at least one mole, but usually as many as 10 to 40 over the entire body. Moles themselves are nothing to be alarmed about, but a mole that changes in texture, color or size should be examined by a dermatologist. Moles that bleed should also be evaluated.
It is a good idea to conduct a self examination for changes in moles every month, as well as to visit the dermatologist for routine check-ups. Melanoma cancers can develop inside of both congenital and acquired moles. Individuals with more congenital moles, more than 50 total moles or at least four atypical moles are at a higher risk for developing melanoma skin cancer.