Butt pain when you stand up may be caused by a simple muscle strain, or it may be related to sciatica, lumbar spine disease or even bone tumor and other disease factors. It is recommended to consult a doctor in time to clarify the cause of the disease. If you have done exercises related to hip muscles, such as squatting, or have a history of wrestling, it may lead to local muscle strain, and the phenomenon of buttock pain when you stand up. This is a normal physiological phenomenon, usually after 3-5 days of rest can be recovered, do not need special treatment. Sciatica may be caused by a variety of factors, such as lumbar disc herniation, sacroiliac arthritis, trauma and so on. The location of the pain caused by it is mainly from the lumbosacral region through the buttocks to the lower limbs of the dispersion of radioactive, burning or pinprick pain, bending over, coughing when the pain is aggravated. If the pain in the buttocks of the site of the obvious raised abnormality, may consider bone tumors, soft tissue tumor growth, compression of the surrounding tissues leading to pain. There may be other reasons for buttock pain when you stand up, so it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy.