Rheumatoid Arthritis
(RA; Arthritis, Rheumatoid)
by Editorial Staff and Contributors
Definition | Causes | Risk Factors | Symptoms | Diagnosis | Treatment | Prevention
Definition
Rheumatoid arthritis (RA) is an autoimmune disease. It causes pain, swelling, stiffness, and loss of function in the joints. RA usually affects the same joint on both sides of the body. It occurs mostly in the:
- Fingers
- Wrists
- Elbows
- Shoulders
- Jaw
- Hips
- Knees
- Toes
Rheumatoid Arthritis
© 2009 Nucleus Medical Media, Inc.
Causes
RA is caused by a combination of genetic and environmental factors that trigger an abnormal immune response. Possible causes:
- Genetic factors—Certain genes that play a role in the immune system are associated with RA development.
- Defects in the immune system can cause ongoing inflammation.
- Environmental factors—Certain infectious agents, such as some viruses or bacteria, may increase susceptibility to RA.
- Other factors—Some evidence suggests that hormonal factors may promote RA development in combination with genetic factors and environmental exposure.
Risk Factors
These factors increase your chance of developing RA. Tell your doctor if you have any of these risk factors:
- Family members with RA
- Sex: female
- Ethnic background: Pima Indians
- Heavy or long-term smoking
Symptoms
When RA begins, symptoms may include:
-
Joint pain and stiffness that is:
- Symmetrical
- Most prominent in the morning
- Lasts for at least half an hour
- Red, warm, or swollen joints
- Joint deformity
- Mild fever, tiredness
- Loss of appetite
- Small lumps or nodules under the skin
As RA progresses, it may cause complications with the:
- Heart
- Lungs
- Eyes
- Skin
- Liver
- Kidneys
- Blood
- Nervous system
- Blood vessels
It is also linked to early cardiovascular disease and death.
Diagnosis
There is no single test for RA. The doctor will ask about your symptoms and medical history. She will examine your joints, skin, reflexes, and muscle strength.
Tests:
- Rheumatoid factor (RF) level in the blood
- Erythrocyte sedimentation rate (ESR) of the blood—to measure inflammation in the body
- C-reactive protein (CRP) —an indicator of active inflammation in the blood
- White blood cell count
- X-rays of affected joints (especially dual energy x-ray absorptiometry)—a test that uses radiation to take a picture of structures inside the body, especially bones
Treatment
There is no cure for RA. The goals of treatment are to:
- Relieve pain
- Reduce inflammation
- Slow down joint damage
- Improve functional ability
Medications
There are a variety of medicines to treat the pain and inflammation of RA. In some cases, medicines may be used in combination.
-
Disease-modifying anti-rheumatic drugs (DMARDS)—to slow the course of the disease; used early in the course of the disease to prevent long-term damage:
- Methotrexate (eg, Rheumatrex)
- Hydroxychloroquine (eg, Plaquenil)
- Sulfasalazine (eg, Azulfidine)
- Leflunomide (eg, Arava)
- Cyclosporine (eg, Neoral)
- Penicillamine (eg, Cuprimine)
- Gold (eg, Ridaura)
- Minocycline (eg, Minocin)
-
Immunosuppressive drugs (only used when other DMARDS are ineffective):
- Azathioprine (eg, Imuran)
- Cyclophosphamide (eg, Cytoxan)—rarely used
- Chlorambucil (eg, Leukeran)—rarely used
-
Over-the-counter medicines:
- Acetaminophen (eg, Tylenol)
- Nonsteroidal anti-inflammatory drugs (NSAIDs) including ibuprofen and naproxen
-
Biologic response modifiers—drugs that interfere with the autoimmune response; includes TNF-inhibitors, such as:
- Etanercept (eg, Enbrel)
- Infliximab (eg, Remicade)
- Adalimumab (eg, Humira)
- Golimumab (eg, Simponi)
- Certolizumab (eg, Cimzia)
Steroids
Low-dose corticosteroids (eg, prednisone) are often used first. They may be tapered when other drugs start working. Avoid long-term steroid use. Corticosteroid injections to inflamed joints may also be used.
Rest and Exercise
Rest reduces active joint inflammation and pain and fights fatigue. Exercise is important for maintaining muscle strength and flexibility. It also preserves joint mobility.
Joint Care
Splints applied to painful joints may reduce pain and swelling. Devices that help with daily activities can also reduce stress on joints. Devices include:
- Zipper extenders
- Long-handled shoehorns
- Specially designed kitchen tools
Stress Reduction
Stress reduction can ease the difficulties of living with a chronic, painful disease. Participating in an exercise program or joining a support group are two strategies you can use to reduce stress. Cognitive behavioral therapy, a form of talk therapy, and meditation may also offer benefits in reducing your pain and improving your ability to cope with RA.
Surgery
Joint replacement and tendon reconstruction help relieve severe joint damage.
Lifestyle Measures
These may relieve stiffness and weakness and reduce inflammation:
- Maintain a balance between rest and exercise.
- Attempt mild strength training.
- Participate in aerobic exercise (eg, walking, swimming, dancing).
- Avoid heavy impact exercise.
- If you smoke, quit.
- Control weight.
- Participate in a physical therapy program.
Prevention
There are no guidelines for preventing RA.
RESOURCES:American College of Rheumatology
http://www.rheumatology.org/
The Arthritis Foundation
http://www.arthritis.org/
Canadian Orthopaedic Association
http://www.coa-aco.org/
Canadian Rheumatology Association
http://www.rheum.ca/
REFERENCES:
Rheumatoid arthritis. National Institute of Arthritis and Musculoskeletal and Skin Disorders website. Available at: http://www.niams.nih.gov/ . Published January 1998. Updated May 2004. Accessed June 18, 2008.
Tanaka E, Saito A, Kamitsuji S, et al. Impact of shoulder, elbow, and knee joint involvement on assessment of rheumatoid arthritis using the American College of Rheumatology Core Data Set. Arthritis Rheum . 2005;53:864-871.
Verstappen SM, Bijlsma JW, Verkleij H, et al. Overview of work disability in rheumatoid arthritis patients as observed in cross-sectional and longitudinal surveys. Arthritis Rheum . 2004;51:488-497.
4/16/2009 DynaMed's Systematic Literature Surveillance http://www.ebscohost.com/dynamed/what.php : Zautra AJ, Davis MC, Reich JW, et al. Comparison of cognitive behavioral and mindfulness meditation interventions on adaptation to rheumatoid arthritis for patients with and without history of recurrent depression. J Consult Clin Psychol. 2008;76:408-421.
11/4/2009 DynaMed Systematic Literature Surveillance http://www.dynamicmedical.com/what.php : Tumor necrosis factor (TNF) blockers (marketed as Remicade, Enbrel, Humira, Cimzia, and Simponi). US Food and Drug Administration website. Available at: http://www.fda.gov... . Updated August 31, 2009. Accessed November 4, 2009.
12/31/2009 DynaMed's Systematic Literature Surveillance http://www.ebscohost.com/dynamed/what.php: Anis A, Zhang W, Emery P, et al. The effect of etanercept on work productivity in patients with early active rheumatoid arthritis: results from the COMET study. Rheumatology (Oxford). 2009;48:1283-1289.
Last reviewed October 2009 by Jill D. Landis, MD
Last Updated: 1/29/2010
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