Huntington's disease can cause a wide range of symptoms, including problems with mental health, behaviour, movement and communication.
The symptoms usually start at 30 to 50 years of age, but can begin earlier than this (juvenile Huntington's disease) or much later.
Once they start, the symptoms usually get gradually worse.
The first symptoms of Huntington's disease often include:
See your GP if you're worried you might have early symptoms of Huntington's disease, especially if you have a history of the condition in your family.
Lots of things can cause these symptoms, so it's a good idea to get them checked.
Your GP may suggest having a test for Huntington's disease.
Over time, someone with Huntington's disease may develop:
In the later stages, people with Huntington's disease find daily activities increasingly difficult and will need full-time nursing care.
Read more about treatment and support for Huntington's disease.