Causes of back bulge include lipoma, folliculitis, trauma, dermatofibroma, etc. Treatment includes medication and surgery. 1. Lipoma: In case of lipoma, surgical treatment such as lipomectomy can be given at this time. 2. Folliculitis: for patients with folliculitis, antibacterial treatment such as metronidazole can be given at this time, and surgical treatment such as incision and drainage of abscesses can be given if necessary. 3. Trauma: if the hematoma is triggered by trauma, surgical treatment such as removal suture can be given. 4. Dermatofibroma: If it is a dermatofibroma, surgical resection such as fibromectomy is the main treatment. If you have a bulge on your back, please consult a doctor in time, and give targeted treatment after clarifying the cause.