If a local area of oil glands are occluded, and CHALAZION results which is a large swollen area on the eyelid margin that may form a white or yellow "head" on the outside or inside of the lid. This can swell up quite quickly and turn red. In its early development and chalazion responds well to hot and cold compresses, if it is chronic a steroid injection or surgical removal may by indicated. In the chronic phase it feels like a round ball in the lid when felt by fingertip.