A stye is a small, painful bump that appears on the edge of your eyelid, usually caused by a bacterial infection in an oil gland or hair follicle. It often looks like a red, swollen pimple and can make blinking uncomfortable. Styes form when glands become blocked and bacteria multiply, leading to inflammation and pus buildup. They usually heal on their own within a week or two, but warm compresses can help speed up recovery. Avoid squeezing or popping a stye, as this can worsen the infection. St