Causes of red eyelid include eyelid margin inflammation, sunburn, common cold, stye and chalazion, according to Healthgrades. Eye surface inflammation and allergic reactions to cosmetics, dust and pollen may also cause red eyelids. Rarely, serious medical conditions such as thyroid disease and orbital cellulitis may cause red eyelids.
In most cases, red eyelids result from less serious conditions, and the condition usually improves and heals in a couple of days without any treatment, notes Healthgrades. However, patients with red eyelids should seek immediate medical care if the condition persists for a prolonged period of time or if they experience serious symptoms such as high fever, breathing difficulty, sudden face inflammation and double vision.