Many forms of arthritis and other diseases can cause shoulder pain and instability. Read about the common diseases that affect the shoulder. Joint inflammation and other problems that may be to blame for shoulder what causes arthritis pain. Here are some diseases that can affect the shoulders.
The most common form of arthritis, osteoarthritis is a chronic condition characterized by the breakdown of the cartilage that cushions the ends of the bones where they meet to form joints. This breakdown causes the bones to rub against each other, causing stiffness, pain and loss of movement in the joint. Bony projections, or spurs, can develop around the joint. In the shoulder, osteoarthritis often occurs after an injury. The result can be joint damage, pain, swelling, inflammation, loss of function and disability.
The joint involvement of rheumatoid arthritis is symmetrical. That means if one shoulder is affected the other likely will be too. There are several different types of juvenile arthritis that can cause pain, swelling and potentially destruction of the shoulders. Subsequent attacks may occur off and on in other joints, typically the feet, ankles, hands, wrists, elbows and knees.
Shoulder involvement is less common, but can occur. Like gout, pseudogout occurs when crystals form within the joints. With pseudogout, however, the crystals are formed from a salt called calcium pyrophosphate dihydrate. Although pseudogout occurs mostly in older people, it can affect younger people, particularly if they have other health problems. And like gout, pseudogout can cause intense pain and swelling, which often comes during the night.
Pseudogout most commonly affects the knee, wrist and shoulder joints. Features of reactive arthritis include inflammation and swelling of the joints, eyes and structures within the gastrointestinal or genitourinary tracts, such as intestines, kidneys or bladder. Although the ankles, knees and joints of the feet often are the first joints affected by reactive arthritis, it also can affect the shoulder. Lupus is a chronic autoimmune disease, meaning the body’s immune system creates antibodies that attack healthy tissues, including the joints, skin, heart, lungs, and kidneys.