Moles are growths on the skin that are usually brown or black. Moles can appear anywhere on the skin, alone or in groups. Most moles appear in early childhood and during the first 20 years of life. Some moles may not appear until later in life. It is normal to have between 10-40 moles by adulthood.
As the years pass, moles usually change slowly, either becoming raised and/or changing color. Often, hairs develop on the mole. Some moles may not change at all, while others may slowly disappear over time.
What Causes a Mole?
Moles occur when cells in the skin grow in a cluster instead of being spread throughout the skin. These cells are called melanocytes, and they make the pigment that gives skin its natural color. Moles may darken after exposure to the sun, during the teen years, and during pregnancy.
A skin tag is a small flap of tissue that hangs off the skin by a connecting stalk. Skin tags are not dangerous. They are usually found on the neck, chest, back, armpits, under the breasts, or in the groin area. Skin tags appear most often in women, especially with weight gain, and in elderly people.
Skin tags usually don't cause any pain. However, they can become irritated if clothing or jewelry, rubs against them.
How Are Skin Tags Treated?
Your dermatologist can painlessly remove a skin tag by cutting it off with a scalpel or scissors, with cryotherapy (freezing it off), or with electrosurgery (burning it off with an electric current).