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kidshealth library

health & safety topics

Your child's health and safety is our top priority. Please search our resource library for information on health, nutrition, fitness, injury prevention and other important topics.

Heart & Blood Vessels

Hemolytic Anemia

Hemolytic anemia is a type of anemia that happens when red blood cells break down faster than the body can make them.

Hemophilia

Hemophilia is a rare bleeding disorder that prevents the blood from clotting properly. With modern treatment, most kids who have it can lead full, healthy lives.

Hemophilia: Handling Bleeds

Kids with hemophilia can bleed easily or longer than normal. So it's important for parents to know how to handle bleeding when it happens.

Henoch-Schönlein Purpura (HSP)

Most kids who develop this inflammation of the blood vessels (marked by a raised red and purple rash) make a full recovery and have no long-term problems.

Hereditary Spherocytosis

Hereditary spherocytosis is an inherited blood disorder. Treatments can help with symptoms.

Hypertension (High Blood Pressure)

When someone has hypertension (high blood pressure), the heart has to pump harder and the arteries are under more strain as they carry blood.

Hypoplastic Left Heart Syndrome (HLHS)

Hypoplastic left heart syndrome (HLHS) is a birth defect of a baby’s heart. The left side of the heart doesn’t grow as it should, making it smaller and weaker than normal.

Infantile Hemangiomas

A hemangioma is a growth of tangled blood vessels. An infantile hemangioma becomes visible in the first few weeks after birth.

Interrupted Aortic Arch (IAA)

An interrupted aortic arch (IAA) is a rare heart condition in which the aorta doesn’t form completely. Surgery must be done within the first few days of a baby’s life to close the gap in the aorta.

Iron-Deficiency Anemia

Iron helps the body carry oxygen in the blood and plays a key role in brain and muscle function. Too little iron can lead to iron-deficiency anemia.