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Contact Dermatitis What is contact dermatitis? Contact dermatitis is a reaction that happens after your skin comes in direct contact with certain substances. The substances may be: Irritants. These cause direct skin irritation and inflammation. They are the most common cause of

Von Willebrand Disease (VWD) What is VWD? Von Willebrand disease (VWD) is an inherited disorder that affects the blood's ability to clot. What causes VWD? VWD is almost always inherited. This means it is passed from parents to children. People with the disorder may have low

Obstructive Sleep Apnea in Children What is 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. This is the passages through the nose and mouth to the windpipe

Scleroderma in Children What is scleroderma in children? Scleroderma is an ongoing (chronic) disease that causes abnormal growth of connective tissue. It can affect the joints, skin, cartilage, and internal organs. It is a rare degenerative disease and gets worse over time. There

Urinary Tract Infections (UTIs) What are urinary tract infections? Urinary tract infections or UTIs are infections in any part of the urinary tract. They are a common health problem that affects millions of people each year. Women are especially prone to UTIs. A UTI may affect

Imperforate Anus in Children What is imperforate anus in children? Imperforate anus is a problem that your child is born with. It happens when your child has a blocked or missing anus. The final part of the digestive tract is the rectum. The rectum collects and compacts the solid

Megaureter in Children What is megaureter in children? Megaureter is a ureter that is much wider than normal. The ureters are the tubes that carry urine from the kidneys to the bladder. A ureter that is wider than 3/8 inch is a megaureter. A megaureter may not drain urine

Fever What is a fever? A fever is a body temperature that is higher than normal. It often means there is an abnormal process occurring in the body. Exercise, hot weather, inflammation, infection, vaccines, and many other things can make body temperature rise. What causes a fever

Langerhans Cell Histiocytosis in Children What is Langerhans cell histiocytosis in children? Langerhans cell histiocytosis is a rare disorder. It occurs when there are very high levels of a type of immune cell called a Langerhans cell. In the past, this disorder was thought to be

Tongue-Tie (Ankyloglossia) in Children What is tongue-tie in children? Tongue-tie (ankyloglossia) is a problem with the tongue that is present from birth. It causes speech and eating problems in some children. The lingual frenulum of the tongue is a small fold of tissue that