Moles are common skin lesions. Almost every adult has a few of them. Some people are more susceptible genetically then others and may have one hundred. This is normal.
Most moles appear on the skin during childhood and adolescence. We expect moles will grow slowly as the child (or teen) grows. Some moles will darken, and others will lighten. These changes are expected and seldom a sign of melanoma, the most-serious form of skin cancer. Any sudden change in size or growth in a child, teen or adult is not expected and should be evaluated.
Adults can see new moles and other pigmented skin lesions grow throughout life. The importance of knowing your body, your moles and seeing a dermatologist for a full body skin exam annually helps prevent or find skin cancer early. Caught early, skin cancer including melanoma is highly treatable.