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Polycystic Ovary Syndrome (PCOS) What is polycystic ovary syndrome (PCOS)? Polycystic ovary syndrome (PCOS) is a set of symptoms caused by a problem with a woman’s hormones. It affects the ovaries. These are the small organs that store a woman’s eggs. But it can also affect the

Stroke What is a stroke? A stroke, or brain attack, happens when blood flow to your brain is stopped. It's an emergency situation. Call 911 if you think you might be having a stroke or stroke symptoms. The brain needs a constant supply of oxygen and nutrients to work well. If the

GERD (Gastroesophageal Reflux Disease) in Children What is GERD in children? GERD (gastroesophageal reflux disease) is a long-term (chronic) digestive disorder. It happens when stomach contents flow back up (reflux) into the food pipe (esophagus) and cause symptoms or problems

Hodgkin Lymphoma in Children What is Hodgkin lymphoma in children? Hodgkin lymphoma is also called Hodgkin disease. It's a type of cancer that starts in the lymphatic system. The lymphatic system is part of the immune system. It helps to fight diseases and infections. The

Benign Prostatic Hyperplasia (BPH) What is benign prostatic hyperplasia? Benign prostatic hyperplasia (BPH) is also called benign prostatic hypertrophy. It means that the prostate gland has become very large and may cause problems passing urine. BPH is not cancer. It's a common

Acne What is acne? Acne is a disorder of the hair follicles and oil glands (sebaceous glands). The oil glands secrete oils (sebum) to keep the skin moist. When the glands get clogged, it can lead to pimples and cysts. Acne is very common. People of all races and ages have acne

Trisomy 13 and Trisomy 18 in Children What are trisomy 13 and trisomy 18 in children? Trisomy 13 and trisomy 18 are genetic disorders. They include a combination of birth defects. This includes severe learning problems and health problems that affect nearly every organ in the

Rumination Syndrome What is rumination syndrome? Rumination syndrome is a rare behavioral problem. It affects children, adolescents and some adults. Rumination syndrome causes an automatic regurgitation of recently eaten food. If your child has this problem, he or she will

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