Health Library

Obesity in Children: How Parents Can Help

Most children become obese because of a poor diet, lack of physical activity, and other lifestyle issues. In rare cases, however, a child's excess weight may be because of a specific illness.

Obsessive-Compulsive Disorder (OCD) in Children

Obsessive-compulsive disorder (OCD) is a type of anxiety disorder. A child with OCD has obsessive thoughts that are not wanted. The thoughts are linked to fears, such as touching dirty objects.

Obstructive Sleep Apnea in Children

Obstructive sleep apnea is when a child briefly stops breathing while sleeping. It happens because of a blockage in the upper airway. The pause in breathing may occur many times in a night, disrupting the child’s sleep.

Oligodendroglioma in Children

The brain is part of the central nervous system (CNS). The CNS also includes the spinal cord. A tumor is an abnormal growth of tissue. An oligodendroglioma is a type of CNS tumor called a glioma.

Omphalocele

An omphalocele is a birth defect. It happens when your baby is forming during pregnancy. In this condition, some of your baby’s abdominal organs poke out (protrude) through an opening in the abdominal muscles. This area is in the umbilical cord. A clear (translucent) membrane covers the organs.

Oppositional Defiant Disorder (ODD) in Children

Oppositional defiant disorder (ODD) is a type of behavior disorder. It is mostly diagnosed in childhood. Children with ODD are uncooperative, defiant, and hostile toward peers, parents, teachers, and other authority figures.

Oral Health

Detailed information on oral health problems and teens

Orthodontics/Braces for Children

Orthodontics is the dental specialty that focuses on the development, prevention, and correction of irregularities of the teeth, bite, and jaws.

Orthopedic Evaluation Procedures for Children

Here you will find detailed information on evaluation procedures used to diagnosis orthopedic disorders in children.

Orthopedic Problems

Detailed information on orthopedic problems and teens

Osgood-Schlatter Disease in Children

Osgood-Schlatter disease is an overuse condition in children. It's when the tendon in a knee becomes injured and inflamed.

Osteomyelitis in Children

Acute osteomyelitis is an infection in the bone. It develops over a short time, usually about 2 weeks. In children, osteomyelitis is more common in the long bones of the arms and legs. But it can affect any bone in the body. Read on to learn more.