 This question always makes me laugh because I wish I knew more of an answer. I should Google it more. Because I think when you're diagnosed with something as an adult, you look into it. But as a kid, I just have never known anything else. And I was just like, sure, I just have this. But cystic fibrosis is a genetic lung disease that you're born with. It also can affect your pancreas. But the main, most notable symptom is chronic lung infections.