Bumps on the inside of the neck may be related to thyroid disorders, immune system disorders, skin disorders and other causes. 1. Thyroid diseases: such as thyroid nodules, thyroid tumors, etc., can be manifested as bumps on the neck that protrude from the surface. 2. Immune system diseases: such as lymphadenitis, lymphoma and other causes, can lead to swelling of the lymph nodes in the neck, manifested as bumps on the inside of the neck. 3. Skin diseases: such as lipoma, due to the appearance of normal fat-like tissue in the neck between the skin and muscle, can form bumps protruding from the surface of the body; such as sebaceous cysts, due to the sebaceous glands in the neck can not be discharged from the normal discharge of sebaceous glands, cysts can be formed. There may be other reasons for the bumps on the inside of the neck, it is recommended to go to the hospital in a timely manner to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.