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Detailed information on CPR, including how to become properly trained in CPR.

Learn what to do if you have flea, mite, or chigger bites.

A food-medicine interaction can happen when the food you eat affects the ingredients in a medicine you are taking. This prevents the medicine from working the way it should.

Food poisoning (foodborne illness) is caused by bacteria or viruses found in food. Food poisoning symptoms often look like stomach flu (gastroenteritis). Many people with a mild case think they have stomach flu or a virus.

Detailed information on frostbite, including symptoms and what to do if frostbite happens.

Hypothermia occurs when body temperature drops below 95°F (35°C). It is a medical emergency. Learn more about symptoms, diagnosis, and treatments.

Treat all snakebites as though they were venomous. Get to a hospital emergency room as soon as you can.

Vital signs are useful in detecting or monitoring medical problems. Vital signs can be measured in a medical setting, at home, at the site of a medical emergency, or elsewhere.

Cubital tunnel syndrome happens when the ulnar nerve, which passes through the inside of the elbow, is injured and becomes inflamed, swollen, and irritated. Learn more about this condition, including the symptoms, how it's diagnosed and treated, and what you can do to help prevent it.