What is JDM?

How common is JDM?

Children smiling into the camera

Juvenile Dermatomyositis (JDM) is a very rare illness in children. It affects approximately 3-4 children in every million per year in the UK. Girls are twice as likely as boys to get it.

The illness usually starts between the ages of four and ten, but children of any age can be affected.


Office Location

Juvenile Dermatomyositis Cohort Biomarker Study & Repository (JDCBS)
UCL Great Ormond Street
Institute of Child Health
6th Floor
30 Guilford Street
London, WC1N 1EH