A chalazion is a small protrusion on the edge or near the edge of the eyelid under the skin, which is caused by the blockage of the exit duct of the eyelid fat-secreting glands and the accumulation of secreted substances in the gland. Chalazion may initially be inflamed and cause pain and redness, which in this case looks like an eyelash flower; But after some time, the pain and redness subsides, and a swollen mass remains on the edge or thickness of the eyelid. The size of this protrusion is not constant and may gradually become larger or smaller. Sometimes chalazion appears from the beginning only as a raised mass and is not accompanied by pain and redness. Chalazion usually does not cause significant eye problems and will shrink and disappear on its own after a few weeks to a few months. Using a warm compress (2-3 times a day and 5-10 minutes each time) using a clean towel and gentle massage may help to open the duct of the sebaceous gland and make the chalazion heal faster.