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Juvenile arthritis (JA) is arthritis that happens in children. It causes joint swelling, pain, stiffness, and loss of motion. It can affect any joint, but is more common in the knees, hands, and feet. In some cases it can affect internal organs as well.
The most common type of JA that children get is juvenile idiopathic arthritis. There are several other forms of arthritis affecting children.
One early sign of JA may be limping in the morning. Symptoms can come and go. Some children have just one or two flare-ups. Others have symptoms that never go away. JA can cause growth problems and eye inflammation in some children.
No one knows exactly what causes JA. Most types are autoimmune disorders. This means that your immune system, which normally helps your body fight infection, attacks your body's own tissues.
JA can be hard to diagnose. Your health care provider may do a physical exam, lab tests, and x-rays. A team of providers usually treats JA. Medicines and physical therapy can help maintain movement and reduce swelling and pain. They may also help prevent and treat complications.
NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases
- Childhood Arthritis: When Joint Pain Affects Kids (National Institutes of Health) Also in Spanish
- Juvenile Arthritis (American College of Rheumatology) Also in Spanish
- Juvenile Idiopathic Arthritis (Nemours Foundation)
- What Is Juvenile Idiopathic Arthritis (JIA)? (National Institute of Arthritis and Musculoskeletal and Skin Diseases) Also in Spanish
Treatments and Therapies
- Getting Kids on Board with Treatment (Arthritis Foundation)
- What Is a Pediatric Rheumatologist? (American Academy of Pediatrics) Also in Spanish
- What People with Rheumatoid Arthritis Need to Know about Osteoporosis (National Institute of Arthritis and Musculoskeletal and Skin Diseases)
- Juvenile idiopathic arthritis: MedlinePlus Genetics (National Library of Medicine)
Statistics and Research
- Arthritis by the Numbers: Book of Trusted Facts and Figures (Arthritis Foundation) - PDF
- ClinicalTrials.gov: Arthritis, Juvenile (National Institutes of Health)
Journal Articles References and abstracts from MEDLINE/PubMed (National Library of Medicine)
- Article: The Effects of a Web-Based Tool for Parents of Children With...
- Article: Restricted upper airway dimensions in patients with dentofacial deformity from juvenile...
- Article: In a large Juvenile Idiopathic Arthritis (JIA) cohort, concomitant celiac disease...
- Juvenile Arthritis -- see more articles
- Arthritis Glossary (Boston University)
Find an Expert
- Find a Rheumatologist (American College of Rheumatology)
- National Institute of Arthritis and Musculoskeletal and Skin Diseases Also in Spanish
- Juvenile Idiopathic Arthritis (JIA) (Nemours Foundation)