Swimmer’s ear (otitis externa) is an inflammation of the external ear canal. Swimmer’s ear is caused by bacteria or fungi. Water that stays in the ear canal during swimming, for instance, may let bacteria and fungi grow.

A nosebleed is bleeding from tissues inside the nose (nasal mucus membranes) caused by a broken blood vessel. Most nosebleeds in children occur in the front part of the nose close to the nostrils.

Breastmilk is rich in the nutrients that help brain growth and nervous system development. It has immune cells and other substances that prevent infection. It's also the perfect first food to help your baby reach every aspect of ideal growth and development.

Your milk is best, but it's not always complete with the nutritional needs of very small premature babies or some very sick newborns.

Blood is the life-maintaining fluid that circulates through the entire body. Learn about the components of blood.

Hemophilia is an inherited bleeding disorder. People with hemophilia can’t stop bleeding because they don’t have enough clotting factor in their blood. Clotting factors are needed for blood to clot. Blood clots to prevent excessive bleeding.

Scoliosis is a deformity of the backbone (spine). It's when the spine has a side-to-side curve. The curve of the spine measures 10° or more.

Constipation means that a child has very hard stools and has fewer bowel movements than normal. It's a very common gastrointestinal (GI) problem.

GERD, or gastroesophageal reflux disease, is a long-term (chronic) digestive disorder. It happens when stomach contents flow back up (reflux) into the food pipe (esophagus).

Detailed information on male growth and development