Burn, First-Degree A burn is an injury that's caused by heat or fire. A first-degree burn is a minor burn that only affects the top layer skin (called the epidermis). It is the mildest type of burn. Back to Articles Related Articles Being Safe in the Kitchen Cooking and baking are lots of fun - as long as you stay safe. Read this article for safety tips before you head into the kitchen. Read More Your Skin No matter how you think of it, your skin is very important. It covers and protects everything inside your body. Read More How to Be Safe When You're in the Sun It's fun to be outside on a hot, sunny day. But too much sun and heat can make you feel terrible. Find out how to stay safe in this article for kids. Read More Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.