What Is Arthritis?

Arthritis is inflammation of the joints (the points where bones meet) in one or more areas of the body. There are more than 100 different types of arthritis, all of which have different causes and treatment methods. The symptoms of arthritis usually appear gradually but they may also occur suddenly. Arthritis is most commonly seen in adults over the age of 65 but it can also develop in children and teens. According to the Centers for Disease Control and Prevention, arthritis is more common in women than men and in those that are overweight (CDC).

Cartilage is a flexible, connective tissue in joints that absorbs the pressure and shock created from movement like running and walking. It also protects the joints and allows for smooth movement.

Some forms of arthritis are caused by a reduction in the normal amount of this cartilage tissue. Osteoarthritis, one of the most common forms of arthritis, is caused by normal wear and tear throughout life; this natural breakdown of cartilage tissue can be exacerbated by an infection or injury to the joints.

The risk of developing osteoarthritis may be higher if you have a family history of the disease.

Another common form of arthritis, rheumatoid arthritis, occurs when your bodys immune system attacks the tissues of the body. These attacks affect the synovium, which secretes a fluid that nourishes the cartilage and lubricates the joints. Rheumatoid arthritis can eventually lead to the destruction of both bone and cartilage inside the joint. The exact cause of the immune systems attacks has not yet been discovered, but scientists have discovered genetic markers that increase your risk of developing rheumatoid arthritis tenfold.

The most common symptoms of arthritis involve the joints. Joint pain and stiffness, mostly in the morning, are typical signs, along with swelling of the joints. You may also experience a decrease in range of motion of your joints or redness of the skin around the joint.

In the case of rheumatoid arthritis you may feel tired or experience a loss of appetite because of the inflammation caused by your bodys attacking immune system. You may also become anemic (experience decreased red blood cells) or have a slight fever. Severe rheumatoid arthritis can cause joint deformity if left untreated.

Diagnosis of arthritis will start with your physician performing a physical exam, during which he or she will check for limited range of motion in the joint, the feeling of fluid around joints, or warm or red joints. Extraction and analysis of your bodily fluids like blood and joint fluid can help your doctor determine what kind of arthritis you have by checking for inflammation levels. Imaging scans such as X-ray, MRI, and CT scans are commonly used to produce an image of your bones and cartilage so your doctor can better determine whether something like a bone spur is the cause of your symptoms.

The main goal of treatment is to reduce the amount of pain youre experiencing and prevent any additional damage to the joints. Improving your joint function is also important, and you may be prescribed a combination of treatment methods to achieve the best results.

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Arthritis: Causes, Signs & Diagnosis - Healthline