Moles can change over time and often respond to hormonal changes, such as during pregnancy. Most moles are benign and no treatment is necessary. However, some moles closely resemble skin cancer. In addition, some benign moles develop into skin cancer. See below for signs to watch for in suspicious moles.
Atypical moles can be tan to dark brown, on a pink background.
These types of moles tend to appear on covered parts of the body, such as buttocks, breasts, and scalp. In addition, people with atypical moles should avoid sun exposure, since sunlight may accelerate changes in atypical moles. Persons with atypical moles should consult a physician with any changes that may indicate skin cancer. Pyogenic granulomas usually form after an injury to the skin, or during pregnancy. Some pyogenic granulomas disappear on their own.