The bumps at the collarbone of the neck may be caused by the following conditions: 1. Lymphadenitis: there are more superficial lymph nodes at the collarbone of the neck, under normal circumstances the lymph nodes are small, soft in texture, smooth on the surface, movable, and cannot be touched, when the lymph nodes become inflamed they will be enlarged, accompanied by pain, after the inflammation is eliminated the lymph nodes can become smaller. 2. Lymph node tuberculosis: the onset of the disease is slow, manifested as painless enlargement of the lymph nodes, texture The lymph nodes are hard, movable, with mild pressure pain and no adhesions, and the lymph nodes increase in size and gradually decrease in mobility with bead-like adhesions. Lymph node tuberculosis is not contagious if it does not break down and form sinus tracts. 3. Sebaceous cysts: Retention cysts formed when sebaceous secretions cannot be discharged due to blockage of sebaceous ducts. The treatment for sebaceous cysts is surgical excision under local anesthesia.