Conditions We Treat

Browse Conditions A-Z

HELLP Syndrome

HELLP syndrome is a rare but life-threatening condition in pregnancy. It causes red cells in the blood to break down. It also causes problems with the liver, bleeding, and blood pressure. It is often linked with preeclampsia and eclampsia. It often develops before delivery. But it may also occur after delivery.

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Hemangioma

A hemangioma is a common vascular birthmark, made of extra blood vessels in the skin. It is a benign (non-cancerous) growth. Hemangiomas may occur anywhere on the body. There are three main types of hemangioma: superficial (on the surface of the skin), deep (under the skin) and mixed.

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Hemangioma and Vascular Malformations

The treatment of a hemangioma is usually observation. Some hemangiomas can cause problems if they bleed or press on important nearby structures, such as the eye or the upper airway. Venous malformations, lymphatic malformations and arteriovenous malformations require a multidisciplinary approach.

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Hemifacial Microsomia (HFM) in Children

Hemifacial microsomia (HFM) is a congenital disorder. This means that your child is born with it. In this condition, one side of your baby’s face is underdeveloped (hemi means half). HFM usually only affects one side of the face. Sometimes both sides may be affected.

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Hemoglobin C Disease

Most people carry hemoglobin A in their red blood cells. Those who carry hemoglobin C, considered an abnormal variation, may develop hemoglobin C disease. This blood disorder develops because the red blood cells break down earlier than they should, leaving too few in the blood and leading to mild anemia.

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Hemoglobin E Trait

Hemoglobin E trait is an inherited blood disorder. That means it is passed down through your parent’s genes. It occurs most often in people of Southeast Asian descent. Many people with hemoglobin E trait have no symptoms.

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Hemoglobinopathy

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Hemolytic Anemia

The hemolytic anemias are a group of disorders in which the red blood cells are destroyed faster than the bone marrow can make them. The term for destruction of red blood cells is hemolysis.

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Hemolytic Disease of the Newborn (HDN)

Hemolytic disease of the newborn (HDN) is a blood problem in newborns. It occurs when your baby's red blood cells break down at a fast rate.  It’s also called erythroblastosis fetalis.

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Hemolytic Uremic Syndrome in Children

Hemolytic uremic syndrome (HUS) is a rare condition that can lead to kidney failure. The syndrome harms the small structures and vessels inside the kidneys. HUS causes red blood cells to clog the tiny blood vessels in the kidneys. It may cause damage to the kidney tissues.

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Hemophilia

Hemophilia is an inherited blood disorder. In hemophilia, a blood clotting factor is missing. In Hemophilia A, Factor VIII (8) is missing. In Hemophilia B, Factor IX (9) is missing. Without these factors, blood will not clot well. People with hemophilia are born with the disorder. It is not contagious.

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Hemophilia Carrier

A hemophilia carrier is a female who has the gene that causes hemophilia A or hemophilia B deficiency.

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Helping Hands Patient Education Materials

Written and illustrated by medical, nursing and allied health professionals at Nationwide Children's Hospital, Helping Hand instructions are intended as a supplement to verbal instructions provided by a medical professional. The information is periodically reviewed and revised to reflect our current practice. However, Nationwide Children's Hospital is not responsible for any consequences resulting from the use or misuse of the information in the Helping Hands.