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Health Library A to Z

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  • Cystic Fibrosis Overview
    • Cystic fibrosis (CF) is an inherited disease of the glands that make mucus and sweat. Here's a quick look at how CF affects the body, and who may be more likely to have this disease.

  • 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.

  • Old Makeup Can Cause Serious Eye Infections
    • Most cosmetics have long shelf lives. But since they can be contaminated with bacteria after only 1 use, it is a good idea to keep track of how long you have been using products, such as mascara and eyeliners.

  • 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.

  • 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.

  • Osteosarcoma (Osteogenic Sarcoma) in Children
    • Osteosarcoma is cancer of the bone. It is rare, but it is the most common type of bone cancer in children and teens. Learn more about risks, symptoms, diagnosis, treatment, and prevention.

  • Overuse Injuries
    • Detailed information on overuse injuries in children, including jumper's knee, patellar tendonitis, little leaguers' elbow or shoulder, and more.

  • Overview of Diabetes Mellitus
    • Diabetes occurs when not enough insulin is made. Or when the body is unable to use the insulin that is made. The 3 main types of diabetes are type 1, type 2, and gestational diabetes.

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