Search Results

Ureterocele and Ureteral Duplication in Children What is a ureterocele and ureteral duplication in children? A ureterocele is a problem with a ureter. The ureter is a tube that connects the kidney to the bladder. There is 1 ureter for each kidney. The ureters send urine from the

Hirschsprung Disease in Children What is Hirschsprung disease in children? Hirschsprung disease is a rare birth defect. It affects the nerve cells in the large intestine. These nerve cells control the muscles that move food and waste, or stool, through the large intestine. The

Eye Cancer: Intraocular Melanoma What is intraocular melanoma? Melanoma is a serious kind of skin cancer. This cancer starts in cells called melanocytes. These cells make the pigment that colors your skin. You also have melanocytes in your eyes. When these cells become cancer, it

Allergy Overview What are allergies? Allergies are due to a problem with the body's immune system. Most allergic reactions happen when the immune system reacts to a false alarm. Normally the immune system attacks harmful things, such as viruses or bacteria. But sometimes it

22q11.2 Deletion Syndrome in Children What is 22q11.2 deletion syndrome in children? The 22q11.2 deletion syndrome (22q11.2DS) is a genetic disorder. In children with this syndrome, a tiny piece of one of the copies of chromosome 22 is missing. This can cause many health problems

Medicine Rashes in Children What are medicine rashes in children? Medicine rashes are the body’s reaction to a certain medicine. You may also hear these called drug rashes. The type of rash that occurs depends on the type of medicine that is causing it. Rashes can range from mild

Postpartum Thyroiditis What is postpartum thyroiditis? Postpartum thyroiditis happens when a person's thyroid gland becomes inflamed within one year of delivering a baby or having a miscarriage or abortion. This condition affects a small percentage of people. The thyroid is a

Pneumonia in Children What is pneumonia in children? Pneumonia is an infection in the lungs. It can be mild or serious. Pneumonia is generally more common in children younger than 5 years old. What causes pneumonia in a child? Pneumonia is most often caused by bacteria or viruses

Meningitis in Children What is meningitis in children? Meningitis is a swelling (inflammation) of the thin membranes that cover the brain and the spinal cord. These membranes are called the meninges. What causes meningitis in a child? Meningitis is most often caused by a

Osteosarcoma (Osteogenic Sarcoma) in Children What is osteosarcoma in children? Osteosarcoma is very rare, but it's the most common kind of bone cancer in children and teens. It's most common in teens and young adults. Osteosarcoma is cancer that starts in the bone. The cancer