What causes the long-term symptoms of long COVID?

Imagine your body is like a toy box, full of different toys that help you play and feel good. When you get sick with long COVID, it's like some of those toys got knocked out or got stuck in the middle of playing, and they can't quite go back to normal right away.

Your body has special trains called cells that carry messages all over your body. Sometimes these trains get delayed or derailed because of the virus. Even after you start feeling better, some of those trains might still be running slowly or not as smoothly as before, this is why you can still feel tired, have trouble thinking clearly, or even get short of breath.

Your body also has cleanup helpers called inflammation that help fix things when you're sick. But sometimes these helpers don't know when to stop cleaning and keep working too hard, like when you clean your room but forget to stop sweeping. That’s why some people with long COVID feel achy or have brain fog even after they’re no longer sick.

Your body is still learning how to fix itself, just like a kid learns new games every day! Imagine your body is like a toy box, full of different toys that help you play and feel good. When you get sick with long COVID, it's like some of those toys got knocked out or got stuck in the middle of playing, and they can't quite go back to normal right away.