Lymph nodes appear above the neck, at the same time long acne in the clinic is mainly common in two categories: the first category, commonly known as fire. In the clinic is usually because of the oral cavity, upper respiratory tract, throat infection, later caused by lymphadenitis, local folliculitis, tiny sebaceous cysts, at this time for the local sebaceous cysts are usually sterilized with iodine povidone, and at the same time, for the primary diseases, such as upper respiratory tract infections, oral cavity, pharyngeal inflammation, antiviral or antibiotic medication, usually lymph nodes and local tiny folliculitis can be relieved; the second category, mainly seen in the neck and other relatively large sebaceous gland. The second category, mainly seen in the neck and other larger sebaceous cysts secondary infection, caused by peripheral reactive lymphadenitis, usually need for sebaceous cyst infection antibiotic drug treatment, if the formation of abscesses usually also need incision and drainage treatment.