A raised hard bump on the back could be a bone spur, skin boil, sebaceous cyst, lipoma etc. It can be treated with medicines such as Loxoprofen sodium tablets, Levofloxacin tablets and excision. 1. Bone spurs: prolonged wear and tear leads to osteophytes, which do not cause swelling of the surrounding soft tissues. Bone spurs grow towards the surface of the skin, leading to the growth of a raised hard pack in the back area. Medications such as Loxoprofen sodium tablets can be taken for relief. 2. Skin boils or sebaceous cysts: due to bacterial infection or excessive sebum secretion in the sebaceous glands and obstruction of the sebaceous gland discharge, the sebaceous gland mouth of the hair follicle is blocked by the formation of localized cysts, resulting in the growth of a bulging hard bag on the back. You can take levofloxacin tablets and other drugs to relieve. 3. Lipoma: fat intake is greater than its own metabolism, fat deposition, the formation of lipoma. Formation of a raised hard bag on the back. It can be treated by surgical resection and so on. Patients with a raised hard bag on the back, should go to the regular hospital in time for examination, to clarify the cause of the disease and then treatment, do not self-medication.