Back pain like a fork in the road, the possible causes are strenuous exercise, lumbar back myofasciitis, thoracic intervertebral disc herniation and so on. 1. Strenuous exercise: back pain like a fork in the road may be caused by strenuous exercise. Before doing strenuous exercise, if there is not sufficient warm-up preparation, it may lead to excessive pulling of intercostal muscles, triggering muscle spasm and back pain like a fork in the road. 2. Lumbar back myofasciitis: Cold, dampness, chronic strain and other factors may cause lumbar back myofasciitis, diffuse dull pain in the lower back, muscle spasm and other symptoms. 3. Thoracic disc herniation: chronic strain, trauma, degeneration of thoracic discs, spinal deformity, etc. are common factors leading to thoracic disc herniation. Restricted back pain is one of its typical symptoms, commonly found in the back, mostly manifested as swelling and pain, and some patients may have stabbing pain. Back pain like a fork in the road may also have other causes, it is recommended to go to the regular hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.