Dermatologist examining a new mole. If you develop a new mole after age 30, a dermatologist should examine the mole for signs of melanoma. #1 problem with moles: Melanoma While most moles are harmless, you shouldn’t ignore yours. Melanoma, the most-serious skin cancer, can begin in a mole. A bleeding

Moles on a child’s skin are generally nothing to worry about. New moles appear during childhood and adolescence. As the child grows, the moles will naturally get bigger. It’s also normal for moles on a child’s skin to darken or lighten. Some moles fade away. These changes are common and rarely