• In the UK, approximately 12,000 children (1 in 1000) under the age of 16 have Juvenile Idiopathic Arthritis (JIA).


  • JIA is an inflammation of one or more joints in a child under the age of 16 years.  Juvenile means that your child was under 16 when the arthritis started, idiopathic means there is no other explanation for the inflammation in their joints and arthritis means that there is swelling and inflammation in the child’s joints
  • The child’s immune system becomes over-active or poorly controlled. As a result, it starts to attack the lining of the joint which causes inflammation and swelling. Infection can also be a trigger.
  • Can be more likely in children with a family history of rheumatoid arthritis or lupus


A very good source of information on JIA is:






Tel: 0845 458 3969


There is a local link up group for parents and carers of children with Juvenile Idiopathic Arthritis (or other rheumatic diseases) living in the Cornwall and Devon area. They aim to have meet ups and offer each other mutual support. This group is part of the JIA Matters network aiming to link together JIA families across England and Wales.




The website for JIA Matters can be found here: