Symptoms of swollen legs and buttocks are not necessarily due to a herniated disc, but can also be caused by excessive exercise and pyriformis syndrome, among other things. Leg and butt swelling may be related to the following factors: 1. Excessive exercise: frequent running, jumping, squatting and hiking can lead to excessive muscle stress in the buttocks and legs, which can result in muscle strain and obvious muscle pain in the buttocks and thighs during rest. 2. Lumbar disc herniation: radiating pain and soreness in the buttocks and legs can occur when the nerves are pressed. 3. Piriformis syndrome: It can also compress the sciatic nerve and cause obvious soreness and swelling in the buttocks and legs. There may be other reasons for leg and buttock swelling, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy.