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- $Unique_ID{BRK03494}
- $Pretitle{}
- $Title{Arthritis, Psoriatic}
- $Subject{Arthritis, Psoriatic Arthropathic Psoriasis Assymetric Arthritis
- Symmetric Arthritis Psoriatic Spondyloarthritis}
- $Volume{}
- $Log{}
-
- Copyright (C) 1986, 1989, 1991, 1992 National Organization for Rare
- Disorders, Inc.
-
- 247:
- Arthritis, Psoriatic
-
- ** IMPORTANT **
- It is possible the main title of the article (Psoriatic Arthritis) is not
- the name you expected. Please check the SYNONYMS listing to find the
- alternate names and disorder subdivisions covered by this article.
-
- Synonyms
-
- Arthropathic Psoriasis
-
- DISORDER SUBDIVISIONS
-
- Assymetric Arthritis
- Symmetric Arthritis
- Psoriatic Spondyloarthritis
-
- General Discussion
-
- ** REMINDER **
- The information contained in the Rare Disease Database is provided for
- educational purposes only. It should not be used for diagnostic or treatment
- purposes. If you wish to obtain more information about this disorder, please
- contact your personal physician and/or the agencies listed in the "Resources"
- section of this report.
-
-
- Psoriatic Arthritis is a rheumatoid-like arthritic condition which is
- associated with psoriasis of the skin or nails, and a negative rheumatoid
- arthritis (RA) serology laboratory test. The disorder is more common in
- females than males.
-
- Symptoms
-
- Psoriatic Arthritis is characterized by inflammation of the joints as well as
- inflammation of the bones and tissues around the joints. Psoriasis of the
- nails or skin may precede or follow joint involvement. Psoriasis of the skin
- is characterized by distinctive silvery gray spots or plaques, with sharply
- defined margins. These scaly areas usually appear on the scalp, the elbows,
- the knees and the skin over the lower end of the spinal region.
-
- Patients with inflammatory polyarthritis who test negative for rheumatoid
- arthritis should be examined for unrecognized or minimal psoriasis which may
- indicate the presence of this disorder.
-
- The last joints of the fingers or toes, lower back (sacrum), wrists, knees
- or ankles are usually most affected by Psoriatic Arthritis. Symptoms are
- usually not the same on both sides of the body (asymmetric). Rheumatoid
- nodules are often not present. Exacerbations and remissions tend to be more
- frequent, rapid, and complete than those occurring in rheumatoid arthritis,
- but progression to chronic arthritis and severe deformities may occur in some
- patients. Aside from the skin involvement and joint pain, which may be very
- disabling, people with Psoriatic Arthritis otherwise usually feel well.
-
- X-ray findings usually include involvement of the last joint of the
- fingers or toes, resorption of terminal phalanges (sausage toes), a severe
- deforming arthritis (arthritis mutilans), and extensive destruction or
- dislocation of large and small joints. Additionally, HLA-B27 antigen is
- present in the blood of most patients with Psoriatic Arthritis.
-
- Causes
-
- The cause of Psoriatic Arthritis is not known. It is a variant of Rheumatoid
- Arthritis, a disorder known to be caused by a dysfunction of the immune
- system. In Rheumatoid Arthritis the body's immune system appears to attack
- healthy tissues for unknown reasons.
-
- Affected Population
-
- Of the many Americans who have psoriasis, only 5 to 8% get Psoriatic
- Arthritis. It is more common in women and usually first appears between the
- ages of 20 and 30 years, but onset can occur at any age.
-
- Related Disorders
-
- Rheumatoid arthritis is characterized by inflammation of the joints on both
- sides of the body (symmetrically), with pain and swelling of the joints. The
- skin is usually not involved in rheumatoid arthritis.
-
- Reider Syndrome is a non-venereal inflammation of the urethra followed by
- eye inflammation, conjunctivitis, and arthritis. The syndrome produces skin
- lesions on the palius, soles, penis and in the mouth. These lesions may
- resemble pustular psoriasis. Psoriasis sometimes appears with the lesions of
- this syndrome early in the course of the disease.
-
- Acute gouty arthritis is an inflammation in and around a joint. This
- inflammation is caused by excess uric acid in the blood (hyperuricemia).
- Attacks occur suddenly and are accompanied by great pain; the big toe is a
- frequent site. This disorder is usually self-limiting and lasts, untreated,
- a couple of weeks.
-
- For more information on Rheumatoid Arthritis in general as well as
- arthritis in general, see related articles in the Prevalent Health
- Conditions/Concerns area of NORD Services.
-
- Therapies: Standard
-
- Treatment of Psoriatic Arthritis is similar to that of rheumatoid arthritis,
- but with some significant differences. Use of antimalarial drugs is
- discouraged. Toxic reactions to gold salts appear more frequently in these
- patients. Triamcinolone is a corticosteroid drug commonly used for treatment
- of this disorder. Oral steroids may have serious side effects, but
- injections of steroids into individual joints may be helpful for some
- patients with Psoriatic Arthritis. For severely affected joints, folic acid
- antagonists and immunosuppressive drugs, especially methotrexate (caution:
- highly toxic) under careful medical supervision, have relieved psoriatic
- lesions and joint symptoms in some patients. Physical therapy, tailored for
- the individual patient, may help to keep joints from stiffening.
-
- Therapies: Investigational
-
- Recently, Psoriatic Arthritis has been treated experimentally with the folic
- acid antagonist and anti-cancer drug methotrexate, as part of the Arthritis
- Program at the National Institute of Arthritis, Musculoskeletal, and Skin
- Diseases. The studies will assess what effect long-term treatment with this
- drug has on patients with this disorder.
-
- The Department of Health and Human Services released information in
- November of 1990, that a protein molecule, HLA-B27, known to be a genetic
- marker for Ankylosing Spondylitis and some forms of Arthritis, has aided
- researchers in developing an animal model for the disease. This will be a
- great help in understanding and treating the patients suffering with
- Arthritis and Ankylosing Spondylitis.
-
- Clinical trials are underway to study the effect of Cyclosporine A in
- the treatment of Psoriatic Arthritis. Interested persons may wish to
- contact:
-
- Dr. Martin Carter
- The Rockefeller University Hospital
- Laboratory for Investigative Dermatology
- New York, NY 10021
- (212) 570-8091
-
- to see if further patients are needed for this study.
-
- This disease entry is based upon medical information available through
- January 1992. Since NORD's resources are limited, it is not possible to keep
- every entry in the Rare Disease Database completely current and accurate.
- Please check with the agencies listed in the Resources section for the most
- current information about this disorder.
-
- Resources
-
- For more information on Psoriatic Arthritis, please contact:
-
- National Organization for Rare Disorders (NORD)
- P.O. Box 8923
- New Fairfield, CT 06812-1783
- (203) 746-6518
-
- National Psoriasis Foundation
- 6443 SW Beaverton Highway
- Suite 210
- Portland, OR 97221
- (503) 297-1545
-
- Psoriasis Research Association
- 107 Vista del Grande
- San Carlos, CA 94070
-
- Arthritis Foundation
- 1314 Spring Street, N.W.
- Atlanta, GA 30309
- (404) 872-7100
-
- The National Arthritis and Musculoskeletal and
- Skin Diseases (NIAMS) Information Clearinghouse
- Box AMS
- Bethesda, MD 20892
- (301) 495-4484
-
- References
-
- CECIL TEXTBOOK OF MEDICINE, 18th ed.: James B. Wyngaarden, and Lloyd H.
- Smith, Jr., Eds.: W. B. Saunders Co., 1988. P. 2327.
-
- THE MERCK MANUAL 15th ed: R. Berkow, et al: eds; Merck, Sharp & Dohme
- Research Laboratories, 1987. Pp. 1246, 2283.
-
-