Rotavirus is a virus that infects the small intestines. It's very common in the winter months, and is the leading cause of diarrhea in children.

Pneumonia is a term that means lung infection. Though most children are able to get better at home with treatment from their doctor, pneumonia can be very serious and can require hospitalization.

Mono is best known for causing swollen glands and tiredness. But it can also cause other symptoms. Here's what you need to know.

Most cases of viral meningitis occur in children under 5 years of age. Viral meningitis is usually mild and often goes away without treatment. It's much less serious than bacterial meningitis.

Learn about the symptoms, treatment, and prevention of meningitis.

Learn about head lice, what they are, how to treat a head lice infestation, and how to prevent them.

GERD is sometimes called acid indigestion or heartburn. It happens when stomach contents flow back up (reflux) into the esophagus. If your child has GERD, they should be checked by a health care provider.

Viral gastroenteritis is an irritation of the stomach and intestines due to infection with a virus. A child with gastroenteritis may have trouble keeping fluids down, and is at risk for dehydration and should be watched closely.

When your child has a fever, it can be frightening. Some fevers can trigger a seizures in a child. They are usually brief and rarely cause problems.

Learn about seizures and epilepsy.