Intense cold can cause frostbite and hypothermia. Learn about first aid for cold exposure.

A strong blow to the head may cause swelling and bleeding inside the skull. The resulting pressure can injure the brain (concussion).

Information on when to seek medical help and what to do while you wait after someone receives an electrical shock.

Learn how to help when someone is having a limited or severe allergic reaction.

Helpful information on treating poisonous bites and swallowed poisons.

A sprain happens when ligaments, the fibrous tissues that connect bones at a joint, pull or tear. A fracture may happen when a bone is hit with more force than it can bear. Learn about first aid for a sprain or fracture.

A break in the skin is an open door, inviting dirt and germs to enter your body and cause infection. Learn how to prevent infection with correct first-aid care.

Follow these illustrated step-by-step instructions to learn how to bandage a wound.

Call 911 if you can't stop the bleeding or the victim shows signs of shock.

It's important to know how to help someone who is choking. This sheet can help.