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's a Lunula?

Article Translations: (Spanish)

Lunula

Say: LOON-yuh-luh

Take a look at your thumb and you'll see this: It's the light half-moon shape at the very bottom of your nail. Every nail has a lunula, but it's easiest to see them on thumbnails.

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