Leg pain can be accompanied by different symptoms according to different causes. Common causes of leg pain include excessive exercise, trauma, arthritis, lumbar spine disease, etc. 1. Excessive exercise: Excessive exercise of the lower limbs can cause the accumulation of lactic acid in the muscles of the lower limbs, resulting in physiological pain in the legs, which is generally accompanied by a feeling of soreness and swelling, and can be relieved after rest. 2. Trauma: the main manifestation of the injured part of the swelling, pain, bruising and so on. If there is a fracture, the affected area will have deformity, abnormal movement, bone rubbing sensation and bone rubbing sound. 3. Arthritis: such as osteoarthritis, gouty arthritis, and so on. Osteoarthritis, there will be joint swelling, pain, to the late stage of the development of the disease, there will be deformity, joint movement restriction and other symptoms; gouty arthritis, in the acute attack, there will be joints, red, swollen, heat, pain and other symptoms. 4. Lumbar spine diseases: such as lumbar disc herniation, there will be lumbago, radiating pain and numbness in the lower limbs. Radioactive pain from the waist through the buttocks, the back of the thighs, calves to the feet. It can be seen that the causes of leg pain are different and the accompanying symptoms are somewhat different. If the leg pain is not relieved after resting, you should go to the hospital in time, complete the examination to clarify the cause of the disease, and then follow the doctor’s instructions for targeted treatment, so as not to delay the condition.