Selective mutism is a rare condition in which a child can’t speak in certain settings but can speak fine in others. It can cause problems with school and social situations.

X-rays are a kind of imaging test that provides your healthcare provider with information about structures inside the body. These tests expose children to low doses of radiation.

Tongue-tie (ankyloglossia) is a problem with the tongue that is present from birth. It causes speech and eating problems in some children.

Open neural tube defects (ONTDs) are problems with the way the brain, spinal cord, or spine forms while a baby is growing in the mother's uterus.

Hemoglobin C disease is caused by abnormal hemoglobin, which is the part of red blood cells that carries oxygen to cells, tissues, and organs. Learn more about the condition, including causes, symptoms, and treatment.

A varicocele is when veins in the scrotum have become large and swollen (dilated). The condition is like varicose veins that occur in the legs. Here's what you need to know.

Walking pneumonia is a mild form of pneumonia. Children with walking pneumonia may feel very tired and run down. But they may still be able to do many of their normal daily activities.

Campylobacter infection is a mild to serious digestive illness. It is caused by bacteria. Symptoms often include cramping, diarrhea, belly pain, and fever.

MRSA is an infection that can be life-threatening if it spreads from the skin to the lungs, the bloodstream, or other organs. MRSA infection can be hard to treat.

Dyskeratosis congenita is a rare disease that's present at birth. Learn more about the causes, symptoms, diagnosis, treatment, and complications.