There are two types of cauterization that can be applied, which are electrocautery and chemical cautery. You can guess from the names of them. Electrocautery is burning off skin tissue with a thin metal bar from the heat of electric current; whereas chemical cautery is the use of chemical reactions on the skin so that you can get rid of small lesions. However, due to its ability to affect surrounding areas of the wounds, chemical cauterization is not always recommended for removing skin tags.
Experts don't know the exact cause of skin tags, but they believe that these growths appear when skin rubs against skin. As such, skin tags are often found in armpits, or on the neck and groin.9 In other cases, your skin tag may be confused with a condition known as the Birt-Hogg-Dube (BHD) syndrome, a condition that produces growths on the skin that look exactly like skin tags.10