
Arthritis refers to more than 100 diseases that cause pain, stiffness and swelling from the inflammation of a joint or the area around a joint. It is the No. 1 cause of chronic disability in the United States, affecting nearly 40 million people. Because there are so many different forms of arthritis, the causes are likely to vary. Scientists are examining how genetics, lifestyles and other factors affect the development of arthritis.
Osteoarthritis is the most-common type of arthritis. It is a non-inflammatory degenerative joint disease characterized by the breakdown of cartilage in one or more joints. The exact cause of osteoarthritis is unknown. About 21 million Americans, usually middle-aged and older, have osteoarthritis.
Fibromyalgia, the second most-common type of arthritis, causes pain in muscles or joints with no signs of infection. It often is misdiagnosed as chronic fatigue syndrome. About 3.7 million Americans have fibromyalgia; 70 percent to 90 percent are women 20 to 50 years old.
Rheumatoid and some of other types of arthritis affect the synovium, a membrane that lines a joint and seals it into a joint. When it becomes inflamed, chemicals that thicken the synovium and damage cartilage and bone are released. Symptoms are pain and swelling.
In a healthy hip, cartilage cushions the area surrounding the hip ball and socket to allow easy movement without pain. In an unhealthy hip, cartilage is damaged or worn away, causing pain from bones rubbing and grinding together.
In a healthy knee, cartilage protects and cushions bone surfaces that come together at the joint, allowing bones to move without friction. In an unhealthy knee, cartilage is damaged or worn away, causing pain from bones rubbing together.
Pain from arthritis can be continuous or it may come and go. It may occur after activity or exercise, but it also may happen if you have been resting. Pain may be concentrated in one spot or you may feel it all over your body. Joints may feel stiff and difficult to move. Daily chores such as climbing stairs and opening cans may become a challenge. You may notice that pain is more severe during certain times of the day or after performing certain tasks.
Some kinds of arthritis cause swelling or inflammation. The skin over the joint may appear swollen and red, and feel hot when touched. Arthritis also may cause fatigue.
Early diagnosis and treatment are crucial to slowing or preventing joint damage. Only a physician can determine if you have arthritis and what type it is. Diagnosis is based on the overall pattern of symptoms, medical history, physical examination, X-rays and laboratory tests.
Because there are different types of arthritis, there are different symptoms and treatments. Care for arthritis often involves more than one type of treatment, and treatment may vary over time. Ask your physician about the best treatment options for you.
The Arthritis Foundation and American Academy of Orthopedic Surgeons Websites contain many articles and patient education information that you may find helpful. Have more questions about your arthritis and our treatment capabilities? Call us today.