Amnesia is loss of memory that is usually temporary but can sometimes be permanent. Learn more about its causes and ways to live with amnesia.
This is a rare condition caused by damage to parts of the brain. Symptoms include difficulty recognising objects, people, sounds or smells.
Dissociative identity disorder
Dissociative identity disorder, previously known as multiple personality disorder, causes people to feel as though they have multiple distinct personalities.
Worried about your memory?
You might be worried that your memory isn’t what it used to be. Learn more about memory loss, what causes it and when you should see a doctor.