ELI5: Explain Like I'm 5

Embolic stroke of undetermined source

Okay kiddo, so you know that our body needs blood to keep us alive and healthy, right? And our brain is a very important part of our body that helps us think, move, and feel different things. Sometimes, something bad can happen to the blood vessels in our brain and that can make it hard for our brain to work properly.

When something stops the blood from flowing to a part of the brain, that's called a stroke. There are different kinds of strokes depending on what causes the blood flow to stop.

An embolic stroke of undetermined source (ESUS) is when something called an embolus (a tiny piece of blood clot, fat, or other material) blocks a blood vessel in the brain and causes a stroke, but doctors can't figure out where the embolus came from.

To help find out what might have caused an ESUS, doctors will usually do tests to check the heart and the blood vessels in other parts of the body. They'll also check things like blood pressure, sugar levels, and cholesterol levels, because these things can also affect how well our blood vessels work.

It's important to figure out what caused the ESUS so that doctors can try to prevent it from happening again. This might mean taking medication to prevent blood clots or making lifestyle changes, like eating healthy and exercising.

Remember, strokes are serious but getting help right away can make a big difference in how well someone recovers. So if you ever notice someone having trouble speaking, moving, or seeing, make sure to tell an adult right away!