There are many reasons why bumps on the stomach don’t hurt or itch, and the common ones are viral warts, sebaceous cysts, lipomas, soft fibroids and other reasons. 1. Viral warts: are caused by human papilloma virus infection caused by benign skin and mucous membrane redundancy, such as flat warts, filiform warts, etc. may cause the stomach skin redundancy that protrudes from the skin, leading to the symptoms of the tummy pimples on the itchy, painless. 2. Sebaceous cysts: local sebaceous gland ducts are blocked, glandular secretions will be stagnant to form a cystic structure, which will lead to the phenomenon of tummy pimples without pain and itching. 3. Lipoma: a benign tumor formed by abnormal proliferation and differentiation of subcutaneous fat tissue, which may also be manifested in the phenomenon of long bumps on the stomach without pain or itching. 4. soft fibroid: mainly formed by the development of connective tissue benign skin lumps, will also be manifested as a lump on the stomach painless and itchy symptoms. There may be other reasons why the lumps on the stomach don’t hurt or itch, so you need to go to the hospital for examination, clarify the cause of the disease, and actively treat it.