Do you know what a nurse is? They are very kind and friendly people who help take care of sick people. A nurse practitioner is like a special kind of nurse who has learned even more things to help people feel better.
Nurse practitioners can do a lot of things that regular nurses can do, like check your heartbeat and blood pressure, help you take medicine, and talk to you about how you're feeling. But they can also do things that only doctors usually do, like give you shots and help diagnose what's wrong with you.
Sometimes, if you're feeling really sick, you might see a nurse practitioner instead of a doctor. They'll work together to make sure you get all the medicine and care you need. And the good thing is, nurse practitioners are really good at listening and making sure you feel comfortable and safe when you're not feeling well.