Warmth and pain at the coccyx may be the result of sacrococcygeal fracture, osteochondritis, osteoarthritis, as well as sciatica or other disorders. 1. Sacrococcygeal fracture:Sacrococcygeal fracture is caused by slipping to sit on the ground, traffic injuries, heavy object striking and other factors, which will cause sacrococcygeal pain, swelling, edema and other symptoms. There may be fever and pain at the tailbone. 2. Osteochondritis Dissecans:Osteochondritis Dissecans is caused by a variety of factors such as stress factors, pathogenic infections, tumor tissue invasion, and autoimmune system diseases. The main symptoms of periostitis in the tailbone are tissue swelling, congestion, pressure pain, fever, etc., and fever and pain at the tailbone may occur. 3. Osteoarthritis:The cause of osteoarthritis is not clear, and it is considered to be caused by age, obesity and other factors. There will be joint pressure and pain, swelling, fever and other manifestations, tailbone with osteoarthritis may appear tailbone fever and pain symptoms. 4. Other: sciatica, femoral head necrosis, sacroiliac arthritis and other diseases may also appear in the tailbone fever and pain phenomenon. If you have symptoms of heat and pain in the coccyx, you should consult a doctor in time to find out the cause of the disease and follow the doctor’s instructions for treatment.