Stye is an inflamed swelling on the edge of an eyelid, caused by bacterial infection of the gland at the base of an eyelash.don't rub eyes with dirty hands , don't squeeze , don't apply any cream , Wet a clean washcloth with warm (not hot) water. Wring the cloth so it’s damp and not dripping. Then place it over your eye for about 5 to 10 minutes. If your stye becomes larger, more painful, or doesn’t clear up a few days after starting home treatment, contact your doctor