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Chickenpox What is chickenpox? Chickenpox is a common childhood disease. It causes an itchy, blistering rash and is easily spread to others. Until the varicella vaccine for chickenpox became available in 1995, chickenpox infection was very common. Almost everyone had been

Juvenile Ankylosing Spondylitis (JAS) in Children What is juvenile ankylosing spondylitis in children? Juvenile ankylosing spondylitis is a type of arthritis. It affects the spine and the places where the muscles, tendons, and ligaments attach to the bone. Ankylosing means stiff

Neurogenic Bladder in Children What is neurogenic bladder in children? Neurogenic bladder means the bladder doesn’t work normally because of nerve damage. It causes a child to have problems with holding or releasing urine. The muscles and nerves of the urinary system work

Herpes Simplex Virus (Cold Sores) in Children What are cold sores in children? Cold sores are small blisters around the mouth caused by the herpes simplex virus. They are sometimes called fever blisters. What causes cold sores in a child? The most common cause of cold sores is

Male Infertility What is male infertility? Infertility is a disease of the reproductive system. It makes a person unable to have children. It can affect a man, a woman, or both. Male infertility means that a man has a problem with his reproductive system. It means you can't start

Growth Hormone Deficiency in Children What is growth hormone deficiency in children? Growth hormone (GH) deficiency is when the pituitary gland doesn't make enough growth hormone. GH is needed to stimulate growth of bone and other tissues. This condition can occur at any age. It

X-Linked Agammaglobulinemia in Children What is X-linked agammaglobulinemia in children? X-linked agammaglobulinemia is a rare genetic disease. It causes a weakened immune system. It is also known as Bruton's agammaglobulinemia. X-linked means that the gene that causes this

Warts What are warts? Warts are common skin growths. They can spread to other parts of the body and to other people by contact. Most warts go away with no treatment over a long time. There are many kinds of warts. The most common types of warts are: Common warts. These grow on

Speech Sound Disorders in Children What are speech sound disorders in children? It’s normal for young children learning language skills to have some trouble saying words the right way. That’s part of the learning process. Their speech skills develop over time. They master certain

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