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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

Sprains and Strains in Children What are sprains and strains in children? Sprains and strains are types of injuries. A sprain is an injury to a ligament while a strain is an injury to a muscle or tendon. Ligaments and tendons are made of fibrous tissue. They connect different

Bacterial Endocarditis in Children What is bacterial endocarditis in children? Bacterial endocarditis is an infection of the inner lining of the heart (endocardium), or the heart valves. It doesn't occur in children very often. But when it does, it can cause serious heart damage

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

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

Congenital Hypothyroidism in Children What is congenital hypothyroidism? When the thyroid gland doesn't make enough thyroid hormone, it's called hypothyroidism. Congenital hypothyroidism is when the disorder is present in a baby at birth. If not treated, it can lead to serious

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

Posterior Urethral Valves in Children What are posterior urethral valves in children? Posterior urethral valves are a problem with the urethra in a boy. The urethra is the tube that drains urine from the bladder to the outside of the body. Posterior urethral valves are small

Poison Ivy Rash in Children What is poison ivy rash? Poison ivy rash is an itchy, allergic reaction to poison ivy. Poison ivy is a very common plant in the U.S. It's similar to two other plants called poison oak and poison sumac. The plants cause allergic dermatitis. This means

Learning Disorders in Children What is a learning disorder in children? A learning disorder is when a child has trouble learning in certain school subjects. Your child may have problems with reading, math, or writing. Skills are below what's expected for the child’s age, grade