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Vision Problems in Children Vision problems that may affect your child Eye disorders that affect vision can be divided into refractive and non-refractive errors. Refractive errors. These eye disorders cause blurred vision. They occur because the shape of the eye does not focus

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

Neuroblastoma What is neuroblastoma in children? Neuroblastoma is cancer that starts when immature nerve cells in the nervous system grow out of control. These cells are called neuroblasts. Over time, the out-of-control cells form a tumor. Neuroblastoma is the most common solid

Diphtheria What is diphtheria? Diphtheria is an illness caused by bacteria. There are two types: Respiratory diphtheria. This type affects the throat, nose, and tonsils. Skin (cutaneous) diphtheria. This type affects the skin. It was a common childhood disease in the past. A

Ataxia Telangiectasia (A-T) What is ataxia telangiectasia (A-T)? Ataxia telangiectasia is a rare childhood disease that affects the nervous system, immune system, and other body systems. It is an inherited disease. The symptoms of A-T often begin to show up by age 5. How to say

Glomerulonephritis What is glomerulonephritis? When the kidneys' filters (glomeruli) become inflamed and scarred, it is called glomerulonephritis. The kidneys slowly lose their ability to remove wastes and excess fluid from the blood to make urine. How to say it gloh-MAYR-yoo-loh

Seasonal Affective Disorder or SAD What is seasonal affective disorder? Seasonal affective disorder (SAD) is a type of depression. It happens during certain seasons of the year, most often fall or winter. It is thought that shorter days and less daylight may set off a chemical

Food Allergy What is a food allergy? A food allergy is when your immune system has a bad reaction to a certain food. This is different from a food intolerance, which does not involve the immune system. This is true even though some of the same signs may be present. What causes a

Erectile Dysfunction (Impotence) What is erectile dysfunction? Erectile dysfunction (ED) or impotence means you can’t get an erection. It can also mean you aren't happy with the size or hardness of your erections, or how long your erections last. In the past, ED was thought to be

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