Disclaimer: This is general health information only and is not a substitute for advice from your GP or healthcare professional.
1. What is juvenile idiopathic arthritis (JIA)?
Juvenile idiopathic arthritis is a chronic inflammatory condition that affects children under the age of 16. It causes persistent joint inflammation, leading to pain, swelling, stiffness, and sometimes reduced joint movement.
2. What causes JIA?
The exact cause is unknown, but JIA is considered an autoimmune condition in which the immune system mistakenly attacks the body’s own joint tissues. Genetic and environmental factors may both play a role.
3. What are the common symptoms of JIA?
Symptoms include joint swelling, pain, and stiffness, particularly in the morning or after periods of inactivity. Some children may limp, avoid using a limb, or have reduced activity levels. In certain types, fever, rash, or eye inflammation may also occur.
4. Are there different types of JIA?
Yes, JIA includes several subtypes based on the number of joints involved and associated features. These include oligoarticular, polyarticular, and systemic forms, each with different patterns of symptoms and progression.
5. How is JIA diagnosed?
Diagnosis is based on clinical history, physical examination, and exclusion of other conditions. Blood tests and imaging such as ultrasound or MRI may support the diagnosis, but there is no single definitive test.
6. Is JIA a lifelong condition?
The course of JIA varies. Some children may outgrow the condition or experience long periods of remission, while others may have persistent disease into adulthood. Early treatment improves long-term outcomes.
7. How is JIA treated?
Treatment aims to control inflammation, relieve symptoms, and prevent joint damage. It may include non-steroidal anti-inflammatory drugs, disease-modifying antirheumatic drugs, biologic therapies, and physiotherapy. Regular monitoring is important.
8. Can JIA affect other parts of the body?
Yes, some forms of JIA can affect the eyes, causing uveitis, which may occur without obvious symptoms. Regular eye examinations are essential to detect and manage this complication early.
9. When should a child be assessed by a doctor?
A child should be evaluated if they have persistent joint swelling, stiffness lasting more than a few weeks, limping, or unexplained joint pain. Early referral to a specialist improves outcomes.
10. What are the possible complications of JIA?
Complications may include joint damage, growth disturbances, reduced mobility, and eye inflammation. With appropriate treatment and follow-up, many children achieve good control of symptoms and maintain normal daily activities.