[Skip to Content]

Find care at Nemours Children's Health Doctors Locations

Featured Topics For Parents

Sitio para padres
Parents Home
General Health
Growth & Development
Infections
Diseases & Conditions
Pregnancy & Baby
Nutrition & Fitness
Emotions & Behavior
School & Family Life
First Aid & Safety
Doctors & Hospitals
Videos
Expert Answers (Q&A)
All Categories
All Wellness Centers

Nemours KidsHealth® Is Celebrating! We've been providing trusted health information for 30 years. Learn More

Parents Home
Sitio para padres
All Categories
All Wellness Centers

Featured Topics For Kids

Sitio para niños
Kids Home
How the Body Works
Puberty & Growing Up
Staying Healthy
Staying Safe
Dictionary
Health Problems
Illnesses & Injuries
Relax & Unwind
People, Places & Things That Help
Feelings
Expert Answers (Q&A)
Videos
All Categories
All Wellness Centers

Nemours KidsHealth® Is Celebrating! We've been providing trusted health information for 30 years. Learn More

Kids Home
Sitio para niños
All Categories
All Wellness Centers

Featured Topics For Teens

Sitio para adolescentes
Teens Home
Body
Mind
Sexual Health
Food & Fitness
Diseases & Conditions
Infections
Drugs & Alcohol
School & Jobs
Sports
Expert Answers (Q&A)
Staying Safe
Videos
All Categories
All Wellness Centers

Nemours KidsHealth® Is Celebrating! We've been providing trusted health information for 30 years. Learn More

Teens Home
Sitio para adolescentes
All Categories
All Wellness Centers

Search KidsHealth library

L

en español: L

Look here to see medical and health terms that start with the letter L.

What Is a Lung Function Test?
What Is Laparoscopy?
What Is Lou Gehrig's Disease (ALS)?
What's Lyme Disease?

Who We Are

About Us

Working With Us

Partners
Editorial Policy
Permissions Guidelines
Media Requests This link opens in a new tab
Contact Us

Legal & Privacy

Privacy Policy & Terms of Use
Notice of Nondiscrimination

All Categories

For Parents
For Kids
For Teens

Wellness Centers

For Parents
For Kids
For Teens

Note: All information on Nemours KidsHealth® is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2025. The Nemours Foundation. Nemours Children's Health®, Nemours KidsHealth®, KidsHealth®, and Well Beyond Medicine® are registered trademarks of The Nemours Foundation. All rights reserved. Images sourced by The Nemours Foundation and Getty Images.