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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

Ventricular Septal Defect (VSD) What is a ventricular septal defect? A ventricular septal defect (VSD) is a congenital heart defect. This means that your baby is born with it. A VSD is a hole in the wall (septum) that separates the 2 lower chambers of the heart (right and left

Depression What is depression? Depression is a whole-body illness. It involves the body, mood, and thoughts. Depression affects the way you eat and sleep. It also can affect the way you feel about yourself, the people around you, and other things. It's not the same as being