Back pain and leg cramps can be caused by several factors, and the treatment varies depending on the cause. Firstly, if you have done strenuous exercise the day before the symptoms appear, and the exercise time is also long, it usually leads to the accumulation of lactic acid in the muscles of the whole body, resulting in muscle soreness, pain, weakness, and fatigue may also cause leg cramps. This situation generally, must be more bed rest-based, you can do some local hot compresses, or local massage, massage, symptoms generally in about 2-3 days will be able to slowly ease. Second, there may be a herniated lumbar disc caused by a herniated lumbar disc, compression of the dural sac and nerve roots will appear in the muscles of the lower back, soreness and pain, compression of the nerve roots, there may also be muscle twitching in the legs and other situations. This condition is mainly the treatment of the lumbar spine, you can take oral medication lumbar traction, physical therapy, Chinese medicine, acupuncture, massage therapy and other comprehensive treatment, generally slowly symptoms will also improve. Among them, lumbar traction and massage therapy can reset the protruding disc, which can reduce the pressure on the dural sac and nerve roots and relieve the symptoms.