Sickle Cell Disease
Sickle Cell Crisis Overview
Patient Comments Read 12 Comments
Sickle cell disease is the most common of the hereditary blood disorders.It occursalmost exclusively among black Americans and black Africans.
Sickle cell disease in black Americans occurs in 3 of every 1,000 (or about 1 in 375) live births. Estimates indicate that the severe form of sickle cell disease affectsmore than 50,000 black Americans.
The first account of what was then called sickle cell anemia in the medical literature was in 1910. James B. Herrick, a Chicago physician, described the symptoms of a 20-year-old black male student from the West Indies. The man had reported "shortness of breath, palpitations, and episodes of icterus [yellow eyes]. He had an anemia." Dr. Herrick described the patient's blood smear as showing "thin, sickle-shaped and crescent-shaped red cells."
Red blood cells deliver oxygen to working or active tissues. In the lungs, hemoglobin (the molecule in the red blood cell) takes on oxygen and, at the same time, releases carbon dioxide. This process is called oxygenation. At the tissue level, this activity is reversed. The same hemoglobin molecule releases oxygen and takes on carbon dioxide. This process is calleddeoxygenation.
In sickle cell disease, certain red blood cells become crescent-shaped (the sickle cell Dr. Herrick described). These abnormal red blood cells, carrying an abnormal hemoglobin known as hemoglobin S, are fragile. A person who hassickle cell disease can become more likely to get infections because the damaged cells eventually clog the spleen. A severe attack, known as sickle cell crisis, can cause pain because blood vessels can become blocked or the defective red blood cells can damage organs in the body.
John R Krimm, DO, FAAEM
Brian F Chinnock, MD
Francisco Talavera, PharmD, PhD
Thomas Rebbecchi, MD, FAAEM
Must Read Articles Related to Sickle Cell Crisis
Patient Comments & Reviews
The eMedicineHealth doctors ask about Sickle Cell Disease:
Sickle Cell Disease - Treatment
What was the treatment for your sickle cell disease (sickle cell anemia)?
Sickle Cell Disease - Symptoms
What were the symptoms of your sickle cell crisis?
Sickle Cell Disease - Describe Your Experience
Please describe your experience with sickle cell disease (sickle cell anemia).