A stye is a red bump that forms on the eyelid and can look and feel like a big pimple. This bump often feels swollen and painful to the touch. Styes are basically like acne that occurs on the ...

Source: Focus Medica. A small red, painful lump in the edge of the eyelid. Stye is usually caused by bacterial infection. It may be present inside or outside the eyelid on one or both eyes and is ...