H

• A to Z: Hemangioma

  Learn more about hemangiomas, common birthmarks in infants.

• A to Z: Hematemesis

  Learn more about diseases and conditions of the stomach and digestive system.

• A to Z: Hematuria (Blood in Urine)

  Learn more about hematuria (blood in urine) and how it’s treated.

• A to Z: Hemiplegia

  Learn about congenital disorders and conditions that affect the brain and central nervous system.

• A to Z: Hemophagocytic Syndrome

  Hemophagocytic syndrome (HPS) is a rare and potentially life-threatening blood disorder of the immune system. It mostly affects infants and children but can develop at any age.

• A to Z: Hemophilia A (Factor VIII Deficiency)

  In factor VIII deficiency (hemophilia A), the body doesn’t make enough factor VIII (factor 8), one of the substances the body needs to form a clot.

• A to Z: Hemophilia B (Factor IX Deficiency)

  In hemophilia B (factor IX deficiency), the body doesn’t make enough factor IX (factor 9), one of the substances the body needs to form a clot.

• A to Z: Hemorrhage, Intracerebral

  Learn about causes of stroke and conditions that can affect the brain.

• A to Z: Hemorrhage, Subconjunctival

  This condition happens when a blood vessel on the surface of the eye breaks open and leaves a red spot on the white of the eye. Learn more here.

• A to Z: Henoch-Schönlein Purpura (HSP)

  Learn about Henoch-Schönlein purpura, a condition in which capillaries in the skin, kidneys, and intestinal tract become inflamed and leak.