The raised bumps on the back need to be treated with medication, surgery, and physical therapy according to the cause of the disease, and common causes include nevus dermatologicus, common warts, etc. The most common causes include nevus dermatologicus and common warts. 1. Nevus of the skin: Nevus of the skin is a benign skin tumor of melanocyte origin, the lesion is hemispherical at the beginning, and gradually increases with the development of the disease, the surface is smooth or papillary, and some of them can see the growth of sweat hair. If the color is uniform and the shape is regular, generally no treatment is needed. If it is located in the waistline, shoulders and other parts of the repeated friction, or have a tendency to malignant change, should be early surgical excision method to remove. 2. common warts: common warts is a skin disease caused by human papillomavirus infection, manifested in the appearance of solid pimples on the surface of the skin, consistent with the skin color. The physical therapy can be used, such as cryotherapy, laser therapy, electrocautery treatment, etc. If the patient is not suitable for physical therapy, you can use topical medication, commonly used drugs, including salicylic acid cream, imiquimod cream, etc. The physical therapy can also be used to treat the warts, which can be used to treat the skin. All of the above drugs should be used under the guidance of a professional doctor to avoid self-medication. The raised bumps on the back may also have other causes, it is recommended to go to the hospital in a timely manner to improve the examination, to clarify the cause of the disease and then give targeted treatment.