Syphilis is a very serious bacterial infection. Learn about symptoms, treatment, and prevention.

Prompt treatment for even mild dehydration is crucial. At greatest risk for dehydration are infants, children, and older adults. Know when to seek medical help.

Your toddler has a harsh cough that gets worse in the evening. Now they have woken up gasping for air. Chances are your child has croup. Read on to learn how to care for your child.

While a slight cut or scratch to your cornea is minor, some eye injuries can be very serious. Learn when you should go to the emergency room, and what treatment options to expect.

A contusion (bruise) happens when a blow to your body doesn't break the skin but does break blood vessels beneath the skin. Blood leaking from the broken vessels causes redness and swelling.

Carbon monoxide is a deadly gas you can't see or smell. Breathing in even small amounts can make you sick. Large amounts can be fatal. Know the signs and symptoms.

Electricity, chemicals, steam, very hot water, and fire can all cause serious burns. The care you receive for burns will depend on the type and severity of your injury. Many burns can be treated in an outpatient setting. If a burn needs inpatient treatment, it should be performed in a burn center. Very severe burns need treatment in a burn center.

A blunt injury to your abdomen can be very serious. It's important to get medical care right away, even if you feel OK. Here's what you need to know.

In most cases, a black eye is a minor injury and can be treated at home. But there are times when you should get medical care right away.

Learn all about tick bites, including removing a tick, common symptoms of tick-borne diseases, and when to get medical help after a bite.