We spoke to five people who were diagnosed with young onset Parkinson's between the ages of 8 and 42.
Parkinson's disease affects 1 in 500 people in the UK. Most are over 50 – but, according to the NHS, 1 in 20 people with the condition first notice symptoms when they're under 40. Some people get diagnosed even earlier than that.
Shamsa Hussein, now 32, was diagnosed at 28; Emma Lawton, 34, was diagnosed at 29; Heidi Reynolds, 41, was diagnosed at 37; Nick Hazell, 44, was diagnosed at 42; and Matt Eagles has been in treatment for Parkinson's symptoms since age 8 and is now 48.