Epilepsy is a common condition that affects the brain and causes frequent seizures.
Seizures are bursts of electrical activity in the brain that temporarily affect how it works. They can cause a wide range of symptoms.
Epilepsy can start at any age, but usually starts either in childhood or in people over 60.
It's often lifelong, but can sometimes get slowly better over time.
Seizures can affect people in different ways, depending on which part of the brain is involved.
Possible symptoms include:
Sometimes you might pass out and not remember what happened.
See a GP if you think you might have had a seizure for the first time.
This does not mean you have epilepsy, as a seizure can have several causes and sometimes they're just a one-off, but you should see a doctor to find out why it happened.
Call 999 for an ambulance if someone:
Treatment can help most people with epilepsy have fewer seizures or stop having seizures completely.
Some people need treatment for life. But you might be able to stop treatment if your seizures disappear over time.
Epilepsy is usually a lifelong condition, but most people with it are able to have normal lives if their seizures are well controlled.
Most children with epilepsy are able to go to a mainstream school, take part in most activities and sports, and get a job when they're older.
But you may have to think about your epilepsy before you do things such as driving, certain jobs, swimming, using contraception and planning a pregnancy.
Advice is available from a GP or support groups to help you adjust to life with epilepsy.
In epilepsy, the electrical signals in the brain become scrambled and there are sometimes sudden bursts of electrical activity. This is what causes seizures.
In most cases, it's not clear why this happens. It's possible it could be partly caused by your genes affecting how your brain works, as around 1 in 3 people with epilepsy have a family member with it.
Occasionally, epilepsy can be caused by damage to the brain, such as damage from: