Painful spots on the outside of the hip when pressed mostly refer to pain on the outside of the hip, and common causes include over-exercise, trauma, pyriformis syndrome, and synovitis of the hip joint. 1. Excessive exercise: due to the accumulation of lactic acid after strenuous exercise, causing pain in the lateral hip, which is a normal phenomenon, and will be relieved after rest. 2. Trauma: Local soft tissue injury or even fracture of hip bone or femur due to fall while walking or external blow can also cause lateral hip pain. 3. Piriformis syndrome: due to trauma, poor posture and other reasons, resulting in tension contracture of the piriformis muscle, compression of the sciatic nerve, thus causing pain in the hip. 4. Hip synovitis: it is a sterile inflammatory reaction occurring in the hip joint, caused by long-term improper posture, chronic strain, trauma, etc. Inflammatory stimulation can appear lateral hip pain. The causes of lateral hip pain are more, may also be related to sacroiliitis, hip impingement, ankylosing spondylitis and other diseases, if the symptoms continue to be unrelieved, it is recommended to consult a doctor in time, to clarify the cause of the disease, targeted treatment.