In-depth

Acute lymphocytic leukemia

Acute lymphocytic leukemia is a type of leukemia that affects immature white blood cells. It's the most common cancer in children and adolescents.

Acute myelogenous leukemia (AML)

Acute myelogenous leukemia (AML), a form of cancer that affects the blood cells, is the most common type of leukemia.

Aplastic anemia

Aplastic anemia occurs when your bone marrow stops producing enough new blood cells. It's a serious problem, but treatments are available.

Coarctation of the aorta

Coarctation of the aorta is a cardiovascular defect resulting in a narrowing of the aorta, the blood vessel that delivers oxygen-rich blood to your body.

Deviated septum

Deviated septum occurs when your nasal septum is significantly displaced to one side, making one nostril smaller than the other.

Essential thrombocythemia

Essential thrombocythemia is an uncommon blood disorder in which your body makes too many platelets, which can cause abnormal blood clotting or bleeding.

Hemolytic uremic syndrome (HUS)

Hemolytic uremic syndrome is an uncommon condition that can cause life-threatening kidney failure, especially for children and older adults.

Hemophilia

Hemophilia occurs when your body lacks one of several clot-forming proteins called clotting factors. The result is prolonged bleeding, which can be life-threatening.

High blood pressure (hypertension)

Uncontrolled high blood pressure can lead to various life-threatening conditions. But it's easily detected — and you can work with your doctor to control it.

Idiopathic thrombocytopenic purpura (ITP)

Idiopathic thrombocytopenic purpura is a blood-clotting disorder that can lead to easy bruising and bleeding. Treatment depends on the severity of symptoms.

Plague

Plague is a disease carried by rats and other rodents. The risk of developing plague is low, and most cases occur in Africa.

Von Willebrand disease

Von Willebrand disease is an inherited bleeding condition caused by a deficit in or impairment of a protein essential for blood clotting.

Wegener's granulomatosis

Wegener's granulomatosis is an uncommon disease that causes blood vessel inflammation that can damage lungs, kidneys and other organs. Untreated, it can be fatal.

Aug. 10, 2012