The symptoms of this disease, which is common in ophthalmology, are usually characterized by acute inflammation of the eyelid in the early stages of the disease due to the invasion of septic bacteria into the lid gland, with typical manifestations of acute inflammation such as localized redness, swelling, heat, and pain. Depending on where the lesion is located, it is divided into internal and external blepharitis. Internal blepharitis refers to the invasion of septic bacteria into the lid gland, so the symptoms of this disease are usually mild and the swelling is not as pronounced, but the pain is more severe, with hard nodules that can be felt at the lesion and are painful when pressed. Exophytic blepharitis is due to bacterial invasion of the hair follicles and accessory sebaceous or sweat glands, so this lesion is mainly located at the base of the eyelashes. It starts with a more diffuse redness and swelling, and on palpation a hard node with significant pressure and pain can be palpated, and it may be accompanied by enlarged preauricular lymph nodes.