Many different methods can be used to diagnose the various types of MD. The age at which the condition is diagnosed will vary depending on when symptoms first start to appear.

Diagnosis will involve some or all of the following stages:

• investigating any symptoms
• discussing any family history of MD
• physical examination
• blood tests
• electrical tests on the nerves and muscles
• a muscle biopsy (where a small tissue sample is removed for testing)

Visit your GP if you or your child has any symptoms of MD. If necessary, your GP may refer you to a hospital for further tests.