If the patient has back pain throughout the day, the underlying problem may lie in overexertion, osteoporosis, old injuries, and herniated lumbar discs. The specific causes are as follows: 1. Overexertion: These patients tend to sit and stand for a long time to work or bend over repeatedly to engage in physical activities, which may lead to lumbar muscle strain. Incomplete treatment, thereafter, the patient will have long-term symptoms of lumbar pain and fatigue, and the symptoms of pain will recur and continue to progress after the patient’s repeated exertion. 2. Osteoporosis: Some patients may suffer from osteoporosis due to malnutrition, endocrine disorders or old age. However, in the early stage of the disease, its symptoms are not obvious. Patients may only experience intermittent pain in the lower back and hip. As the disease progresses, the patient will continue to recur the symptoms of low back pain. 3. Stale injury: Some patients may have some serious stale injuries in the lumbar region, such as serious lumbar vertebrae fracture or soft tissue injury. After the recovery of such patients, it is very likely that aseptic inflammation will remain in the affected area, which will make the patients often prone to the symptoms of low back pain. 4. Lumbar disc herniation: Patients suffering from lumbar disc herniation may also suffer from intermittent pain in the lower back, which is often aggravated by prolonged sitting and exertion. It is recommended that patients go to the orthopedic department in time after the appearance of such symptoms.