Raised flesh bumps may be caused by dermatofibroma, lipoma, epidermal cysts and other diseases. 1. Dermatofibroma: the cause is not clear, may be related to viral infection, trauma and other factors, mainly manifested as the appearance of round nodules in the skin, usually dark brown, yellowish brown. 2. Lipoma: the cause of the disease may be related to heredity, chronic inflammation and other factors, the patient will appear one or more lumps under the skin, lipoma texture is soft, elastic, and can be slightly moved by hand push. 3. Epidermoid cysts: the etiology may be related to embryonic anisotropic dislocation, skin injury and other factors. The main manifestation is the appearance of subcutaneous nodules, can be slightly mobile, normal skin color or light brown. There may be other reasons for the appearance of raised bumps, it is recommended to go to the hospital, identify the cause of the disease, under the guidance of the doctor as soon as possible to receive standardized treatment.