Eyelid pain is mainly caused by the following: First, blepharitis, also known as wheals or eye sores, in addition to pain, there is hard nodule formation in the eyelid area, local skin redness, and elevated skin temperature, caused by poor hygiene habits, not washing hands and rubbing eyes. Second, chickenpox-herpes zoster virus infection, related to low body resistance, weakness, cold, and exertion, with redness of the eyelid in the painful area, formation of small blisters, and arrangement of blisters in clusters. Third, neuralgia, the eyelid area is very rich in sensory nerve fibers, migraine, trigeminal neuralgia can also trigger the involvement pain in the eyelid area, the eyelid appearance does not look abnormal.