If you can feel 2 round balls under your head, it may be caused by enlarged submandibular lymph nodes, sebaceous cysts, lipomas and so on. 1. Enlarged submandibular lymph nodes: inflammation of the tonsils, otitis media, lymphadenitis and other inflammatory diseases can induce submandibular lymph node enlargement, thus appearing to be able to feel two balls under the jaw, is a kind of body’s immune response, in the normal life should avoid spicy food. 2. Sebaceous cysts: sebaceous gland ducts are blocked, resulting in sebaceous gland excretion obstacles to the accumulation of sebaceous cysts, the formation of sebaceous cysts, the clinical manifestations of the swelling for the round, medium hardness, smooth surface, etc., therefore, there will be a low head can feel the two balls under the jaw. 3. Lipoma: intestinal malnutrition, congenital dysplasia, adipose tissue thank abnormality, inflammation stimulation of connective tissue degeneration, etc. will induce lipoma, in the clinic, most of them are presented as a few millimeters to a dozen millimeters of pimples, so there will be the case that you can feel 2 round balls under the jaw when you bow your head. When you can feel 2 round balls under the jaw, it is recommended to go to the hospital for timely consultation to clarify the cause of the disease and timely treatment.