The wait times in our emergency departments are longer than usual due to illnesses like RSV and the flu. View our estimated ED wait times and learn more about where to get care for your sick child.

Patient & Family Education Materials

Start over with a New Search

What Is Cystic Fibrosis?

Cystic Fibrosis

Say: SIS-tik fi-BRO-sus

You may know that you have mucus in your nose, mouth, and lungs, and that it helps keep you healthy. But kids with the condition cystic fibrosis have bodies that make thick, sticky mucus. This causes problems in their lungs and their digestive tract. The condition makes it hard for them to breathe and also to get the nutrition they need from their food.

Back To Top

Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.

© 1995-2025 KidsHealth ® All rights reserved. Images provided by iStock, Getty Images, Corbis, Veer, Science Photo Library, Science Source Images, Shutterstock, and Clipart.com