Blepharitis is an acute purulent inflammation of the eyelid glands and is not contagious, so it is not contagious. Blepharitis, also known as blepharitis, is an acute purulent inflammation of the eyelid glands, mostly caused by staphylococcal infections, the disease is not contagious, so it will not infect others. Blepharitis is usually unilocular, manifested by redness, swelling, heat and pain in the affected area. External blepharitis is mainly manifested by hard nodules at the eyelid margins at the base of the eyelashes, which may be accompanied by enlarged lymph nodes in front of the ear, as well as localized tenderness. Internal blepharitis is characterized by a hard nodule in the lid gland, which may be accompanied by significant pain, congestion, and swelling. If the clinical symptoms such as redness, swelling, heat and pain are obvious, it is recommended to consult a doctor in time and follow the doctor’s instructions for appropriate treatment.