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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

Guillain-Barré Syndrome in Children What is Guillain-Barré syndrome in children? Guillain-Barré syndrome (GBS) is a short-term but often life-threatening disorder that affects the nerves in the body. GBS can cause muscle weakness, pain, and short-term (temporary) paralysis of the

Acquired Hypothyroidism in Children What is hypothyroidism in a child? Hypothyroidism is when the thyroid gland doesn't make enough thyroid hormone. The condition is more common in adults. But it’s the most common thyroid disorder in children. Not enough thyroid hormone leads to

Menstrual Cramps (Dysmenorrhea) in Teens What are menstrual cramps in teens? Menstrual cramps are severe, painful cramps that occur during a period. There are two types: Primary. This type starts soon after a girl gets her first period. It's usually lifelong. But it may get

Aplastic Anemia in Children What is aplastic anemia in children? Aplastic anemia is a serious condition in which the bone marrow doesn’t make enough new blood cells. With fewer blood cells, a child with aplastic anemia has: Less oxygen sent to organs, tissues, and cells from too

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

Hyperparathyroidism in Children What is hyperparathyroidism in children? Hyperparathyroidism is when the parathyroid glands make too much parathyroid hormone. The condition is rare in children. The parathyroid glands are 4 tiny glands located on the back of the thyroid. The

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

Hemolytic Anemia in Children What is hemolytic anemia in children? Hemolytic anemia is a group of disorders in which the red blood cells are destroyed faster than the bone marrow can make them. The term for destruction of red blood cells is hemolysis. What causes hemolytic anemia

Dehydration What is dehydration? Dehydration means that you don’t have enough water in your body. The human body normally contains a lot of water. In fact, 50% to 60% of your body weight comes from water. It helps keep your body healthy and working well. Mild dehydration can