Blepharitis, generally referred to as blepharitis, is often characterized by redness, swelling, burning, pain and tearing of the affected area, and includes external and internal blepharitis. 1. External blepharitis: near the roots of the eyelashes, redness and swelling with pressure and pain appear, which may ulcerate on their own. If it is close to the outer edge, it may cause reactive bulbar conjunctival edema, resulting in eyes that look like they are teary. 2. Internal blepharitis: It occurs inside the eyelid, often with a hard nodule, accompanied by pressure and pain. As the disease progresses, a yellow pus spot is formed, which rubs against the lid conjunctiva, leading to localized congestion and ulceration. Patients with blepharitis are advised to go to the hospital in time, and can choose levofloxacin eye drops and so on under the guidance of the doctor to control the infection, and if the pain is serious, ibuprofen and so on can be applied to relieve the symptoms.