A skin tag is a small flap of tissue that hangs off the skin by a connecting stalk. These are benign lesions and are not harmful. Skin tags most commonly occur around the neck, under breasts, and in the armpit and groin area. They typically do not cause pain, but occasionally they may become irritated from clothing or jewelry rubbing on them. Your healthcare provider can remove skin tags by snipping them off with scissors or a scalpel, with cryotherapy (freezing it off), or with electrocautery (burning with an electric current).