The causes of pain in the body in the elderly are usually as follows: 1. The most common cause of this condition is suffering from some bone and joint diseases. Due to degenerative changes in the joints, the elderly are prone to osteoporosis, osteophytes, herniated discs or suffer from rheumatoid arthritis, rheumatoid arthritis, gouty arthritis and other joint diseases. Patients may experience redness, swelling, heat and pain in the joints. 2. Elderly people with tumor diseases and multiple metastases may also experience pain all over the body, and patients with advanced tumor may experience cancer pain, which is generally more intense and can be a painful symptom all over the body. It is recommended to go to hospital for X-ray or CT examination to exclude whether bone and joint diseases or other parts of the tumor have metastasized.