It is not clear exactly what causes skin tags, but it may happen when clusters of collagen and blood vessels become trapped inside thicker pieces of skin. As they are more common in skin creases or folds, they may be mainly caused by skin rubbing against skin.
In general, skin tags don’t require treatment. If skin tags hurt or bother you, you may opt to have them removed.
Your dermatologist may remove your skin tags by:
- Cryotherapy: Freezing the skin tag with liquid nitrogen.
- Surgical removal: Removing the skin tag with scissors or a scalpel.
- Electrosurgery: Burning off the skin tag with high-frequency electrical energy.
- Ligation: Removing the skin tag by tying it off with surgical thread in order to cut off its blood flow.