Birthmarks and moles are types of skin markings that are mostly harmless. But because moles may rarely turn into skin cancer (melanoma), it's important to be able to tell these skin issues apart. A ...

Freckles and moles are two types of skin spots that have varying causes, shapes, and colors. While most are not harmful, it’s worth talking with a doctor about any spots that develop suddenly or look ...

Benign moles are noncancerous skin growths. They are typically symmetrical with a rounded shape and a smooth edge. A mole is a small collection of skin cells. It’s also known as a nevus (the plural is ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. Dear Dr. Donohue • Every summer, we rent a cottage for two weeks. This summer is the first time I have seen three black spots on ...