ELI5: Explain Like I'm 5

Narcolepsy

Narcolepsy is a condition that affects a person's ability to stay awake during the day.

Think of it like a little switch in the brain that controls when you feel sleepy or awake. In people with narcolepsy, that switch doesn't work quite right. Sometimes it turns on when it's supposed to be off (making them feel sleepy when they shouldn't) and sometimes it doesn't turn on when it's supposed to be on (making it hard for them to stay awake).

People with narcolepsy might also have something called cataplexy, which means that their muscles suddenly become weak and they can't move very well. This usually happens when they're feeling strong emotions like laughter or surprise.

Doctors don't know exactly what causes narcolepsy, but they think it might have something to do with the brain chemicals and cells that help us sleep and stay awake. There's no cure for narcolepsy, but there are treatments that can help manage the symptoms. These might include medications or lifestyle changes like making sure to get enough sleep and taking short naps during the day.