The back of the neck inside feel up a small bump, may be folliculitis, lymph node swelling, sebaceous cysts, seborrheic keratosis, human papillomavirus infection, lipoma and so on these cases, need to according to the different causes, targeted treatment.1, folliculitis: the back of the neck inside feel up a small bump, if the small bumps have redness and swelling, itching, pinprick-like pain and other symptoms, consider the possibility of folliculitis. Folliculitis is caused by bacterial or fungal infection of the skin, and if there is no pus, it can be allowed to absorb on its own. If the pressure pain is obvious and there is pus, you need to go to the hospital after disinfection, puncture and pumping or incision and drainage, during the period of time you need to do a good job of local cleaning care, to prevent the occurrence of infection; 2, lymph node enlargement: if the back of the neck inside the touch up with a small lump, texture is slightly hard, accompanied by pain, do not rule out the possibility of lymph node enlargement, mostly due to bacterial or fungal infections caused by the oral anti-inflammatory drugs, such as cephaloradin capsule, Amoxicillin clavulanate potassium tablets, etc.; 3, sebaceous cysts: if the small bumps soft texture, clear boundaries, good mobility, and no pain when pressed, consider sebaceous cysts, which is a benign lesion, mostly due to the sebaceous gland excretory ducts are blocked. Generally small sebaceous cysts can not have to deal with, if the lumps are large and have pressure pain, can be surgically localized excision; 4, seborrheic keratosis: the back of the neck inside the touch up a small lump, if the surface of the small lumps look yellow-brown pimples, plaques, touching the surface of the surface of the roughness, the border is clear, more consideration for the seborrheic keratosis. It is mainly due to keratinocyte maturation delay caused by benign intraepidermal tumors, the cause is still unknown, asymptomatic generally do not need treatment; 5, human papillomavirus infection: if the bumps are light brown, the surface of the thorns, it may also be infected with the human papillomavirus, the main route of infection of this disease is the spread of direct contact and indirect contact, the need to consult a doctor in a timely manner. There is no specific drug for this disease, strengthen exercise, improve their immunity, and actively cooperate with the treatment; 6, lipoma: if the bumps are soft to the touch, and the tumor has a clear boundary, it may also be a lipoma. It usually grows slowly, and is generally caused by genetic, chronic inflammation, abnormal fat metabolism, long-term hormone therapy and other factors. If there are no symptoms, regular follow-up can be enough, but if the number is too large and painful symptoms appear, you should go to the hospital in time for surgical excision treatment.