The right side of the neck is painful to touch a bulge and consider and acute lymphadenitis and thyroid disease. 1. Acute lymphadenitis: a kind of acute inflammation of lymph nodes caused by bacterial infection, with hemolytic streptococcus and staphylococcus aureus common, manifested as local lymph node enlargement, touching with obvious tenderness. 2. Thyroid diseases: thyroid nodules, thyroid adenomas, etc. Thyroid nodule refers to a lump in the thyroid gland, which can move up and down with swallowing movements, and if combined with infection, pressure pain will appear. If you feel a bulge on the right side of your neck and it hurts, there may be other causes, so it is recommended that you go to the hospital in time to find out the cause of the problem and get the appropriate treatment.