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Lynch syndrome is an inherited condition that increases a person's risk for developing colorectal cancer and other cancers. Lynch

Herpes simplex is a virus that can cause painful blisters and sores. The virus usually affects the skin and the thin layers of

Hemolytic anemia is an inadequate amount of red blood cells, caused by the rapid destruction of red blood cells in the blood or

A hot flash is a sudden sensation of intense body heat, often with profuse sweating and reddening of the head, neck, and chest

It's normal for blood pressure to go up and down throughout the day. But if it stays up, you have high blood pressure. For

Cholesterol is a type of fat (lipid) in your blood. High cholesterol means that you have too much of the fat in your blood. Your

A high-risk pregnancy means that you or your baby has a greater chance of health problems. Things that may make your pregnancy

Hirschsprung's disease is a birth defect in which certain nerve cells in a part of the large intestine are missing, and the

Hives are an allergic reaction of the skin that may last a few minutes or can persist for a few days. They appear as raised, red

HIV (human immunodeficiency virus) is a virus that attacks the immune system, the body's natural defense system. Without a strong