Okay kiddo, let's talk about something called pulmonary embolism. Have you ever heard of a blood clot? It's when your blood forms a kind of bump that can block up your veins or arteries. Well, when that happens in your lungs, it's called a pulmonary embolism.
So, why does this happen? Sometimes, when we're not moving around enough, or when we're sick or injured, our blood can start to get thicker and stickier than it should be. When that happens, bits of the thickened blood can stick together and form a clot. That clot can then travel through your bloodstream until it gets stuck somewhere - like in your lungs!
When a clot gets stuck in your lungs, it can be very dangerous. It can prevent your blood from carrying oxygen around your body properly, which can make you feel very ill. You might feel short of breath, dizzy, or even pass out.
If someone thinks they might have a pulmonary embolism, it's really important that they go to the doctor right away. The doctor can give them medicine to help break up the clot and thin out their blood so that it won't happen again. It can be scary and uncomfortable, but with proper treatment, most people make a full recovery.