Osteoarthritis is a musculoskeletal condition that occurs when the cartilage, found at the end of the bone, wears down over time. Once the cartilage wears away, the bones rub against each other. This can cause significant pain and unfortunately there is no cure. This condition is more common in women, the elderly and those who are overweight. 

The MAST study found an 1.35 times increased risk of osteoarthritis in those who have severe headache pain.