Sickle cell disease affects the red blood cells and is one of the most common genetic (inherited) diseases. It affects 70 000 people in the United States. The normal red blood cell carries oxygen and delivers it to the tissues. Sickle-shaped red blood cells have difficulty traveling through the blood vessels to deliver oxygen to the tissues. These sickle cells are more stiff and can get stuck inside the blood vessels. People with sickle cell disease often have problems caused by blockages of these sickle cells within their blood vessels. Compared with normal red blood cells, sickle cells are more fragile and are often broken up within the blood vessels. When red blood cells are broken, the affected person becomes anemic (low blood count) and may develop a yellow discoloration in the whites of the eyes called jaundice. Pain is a major consequence of red blood cells sickling within the blood vessels. When pain is severe, it is called a sickle cell pain crisis. The contents of the sickle cell released during its breakage can damage the blood vessel wall, resulting in vasculopathy (disorder of the blood vessel wall that further restricts blood circulation to tissues or organs). The December 10, 2008, issue of JAMA includes an article about a person with sickle cell vasculopathy.
Pain in the affected area of the body
Acute chest syndrome—pain in the chest associated with cough, shortness of breath, and fever resembling pneumonia
Lower leg ulcers that are often slow to heal
Stroke when a blood vessel in the brain is affected, resulting in lost or reduced function in the affected part of the body
Priapism—painful erection that can last more than 4 hours when the blood vessels in the penis are affected
Pulmonary hypertension—elevated blood pressure in the artery that carries the blood from the heart to the lungs
Medication to relieve pain
Intravenous fluid hydration
Wound care for ulcers
Hydroxyurea—a drug used to decrease the frequency of pain crises and need for blood transfusions
Medications for pulmonary hypertension
Individuals with sickle cell disease should
Drink plenty of fluids
Avoid extreme exertion
Avoid extremes of temperature
Avoid high altitudes
Get appropriate vaccinations as recommended by your physician, including an annual influenza vaccine and the pneumococcal vaccine
Discuss with your doctor whether hydroxyurea treatment is appropriate for prevention of sickle cell complications
To find this and other JAMA Patient Pages, go to the Patient Page link on JAMA's Web site at http://www.jama.com. Many are available in English, Spanish, and French. A Patient Page on facts about sickle cell disease was published in the May 12, 1999, issue; one on pulmonary hypertension in the January 23, 2008, issue; and one on blood transfusions in the October 6, 2004, issue.
Source: Centers for Disease Control and Prevention
The JAMA Patient Page is a public service of JAMA. The information and recommendations appearing on this page are appropriate in most instances, but they are not a substitute for medical diagnosis. For specific information concerning your personal medical condition, JAMA suggests that you consult your physician. This page may be photocopied noncommercially by physicians and other health care professionals to share with patients. To purchase bulk reprints, call 312/464-0776.
TOPIC: SICKLE CELL ANEMIA