H

• A to Z: Hyperopia

  Hyperopia is farsightedness, a common condition in which someone can see things in the distance clearly, but things that are closer appear blurry.

• A to Z: Hypertension, Intracranial

  Learn about causes of vision loss and conditions that can affect the brain and nervous system.

• A to Z: Hypertension, Primary

  Learn about types of high blood pressure and conditions that can affect the heart and blood vessels.

• A to Z: Hypertension, Pulmonary

  Learn about types of high blood pressure and conditions that can affect the lungs and heart.

• A to Z: Hypertriglyceridemia

  In this common condition, there is a high level of fats called triglycerides in the blood. Learn how this is related to diet, lifestyle, and heart disease here.

• A to Z: Hypertrophy, Tonsillar (Enlarged Tonsils)

  Tonsillar hypertrophy, or enlarged tonsils, can happen due to an ongoing (chronic) condition or a temporary effect of an infection.

• A to Z: Hyphema

  Hyphema is a condition that happens when blood collects in the front part of the eye.

• A to Z: Hypogammaglobulinemia

  Learn about complications of white blood cell deficiencies and conditions that affect the immune system.

• A to Z: Hypoglycemia

  Learn more about hypoglycemia, a condition where glucose levels drop below normal.

• A to Z: Hyponatremia

  Hyponatremia is an abnormally low level of sodium in the blood.