(Congenital Spherocytic Anemia; Hereditary Spherocytosis)
Spherocytosis is a condition that causes an abnormality in the red blood cell membrane. While healthy blood cells are shaped like flattened, indented disks, these abnormal membranes lead to sphere-shaped red blood cells, and the premature breakdown of those cells.
Red blood cells suffering from spherocytosis are smaller, rounder in shape, and more fragile than healthy red blood cells. The rounded shape causes the red blood cells to be caught in the spleen, where they break down.
Spherocytosis occurs in all races, but is most common in people of northern European descent.
Spherocytosis cases may be very mild, with minor symptoms, or very severe with symptoms that quickly surface. These symptoms may occur after certain types of infections. Severe cases may be diagnosed in childhood, while those with mild symptoms may not be diagnosed until into adulthood.
With treatment, symptoms can be controlled.
Healthy Red Blood Cells
A risk factor is something that increases your chance of getting a disease or condition.
The following factors increase your chance of developing spherocytosis:
- Having a family member with spherocytosis
Your doctor will ask about your symptoms and medical history, and perform a physical exam.
Tests may include the following:
- Examination of the spleen
- Blood tests
- Liver function tests
- Osmotic and incubated fragility tests to diagnose hereditary spherocytosis
- Coombs' Test—an antiglobulin test to examine red blood cell antibodies
Talk with your doctor about the best treatment plan for you. Treatment options include:
Folic Acid Supplementation
Folic acid 1 mg daily and consideration for blood transfusions are recommended during periods of severe anemia .
Surgical removal of the spleen can cure the anemia. The abnormal shape of blood cells remain, but the blood cells are no longer destroyed in the spleen.
Cincinnati Children's Hospital Medical Center
University of Virginia Health System
About Kids Health
Alberta Children's Services
Congenital spherocytic anemia. Medline Plus Medical Encyclopedia. US National Library of Medicine website. Available at: http://www.nlm.nih.gov/medlineplus/ency/article/000530.htm . Accessed June 27, 2007.
Delaunay J. The molecular basis of hereditary red blood cell membrane disorders. Blood Rev . 2007;21:1-20.
Hereditary spherocytosis. Texas Children's Cancer Center and Hematology Service. Baylor College of Medicine website. Available at:
Accessed June 27, 2007.
Treatment of anemia at Mayo Clinic. Mayo Clinic website. Available at: http://www.mayoclinic.org/anemia/index.html . Accessed June 27, 2007.
Last reviewed November 2008 by
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