Nodules in the lumbar region are often associated with the following causes: 1. They may be caused by muscle spasm. The patient’s previous acute lumbar sprain, or lumbar muscle strain, at this time will be felt in the lumbar muscle spasms or nodules. 2, may be due to fasciitis of the low back, often due to the patient’s low back has a cold, or the impact of previous trauma, resulting in a sterile inflammation of the deep fascia. It may be caused by scarring or adhesions, often due to old injuries, such as cuts or fractures, or soft tissue tears, and after recovery, there may be local adhesions and scarring, and the nodules may be felt under the skin when touched. 4. Occupational disease. For example, a series of lesions such as powdery tumors, lipomas, and fibroids are common here.