About Sickle Cell
Anemia
Sickle cell anemia is an inherited blood disease. That means
you are born with it and it lasts a lifetime. Sickle cell
anemia affects the red blood cells. Normal red blood cells are
smooth and round like doughnuts. They move easily through blood
vessels to carry oxygen to all
parts of the body.
In sickle cell anemia, the red blood cells become hard,
sticky, and shaped like sickles or crescents. When these hard
and pointed red cells go through the small blood vessels, they
tend to get stuck and block the flow of blood. This can cause
pain, damage, and a low blood count or anemia.
Anemia is a shortage of red blood cells in your blood. In
sickle cell anemia, this shortage of red blood cells occurs
because sickle cells do not last very long. It is hard for your
body to make new red blood cells fast enough to keep up. Normal
red blood cells last about 120 days in the bloodstream. Sickle
cells die after only about 10 to 20 days.
Symptoms
The signs and symptoms of sickle cell anemia are different
in each person. Some people have mild symptoms. Others have
very severe symptoms and are often hospitalized for
treatment.
The most common symptoms or signs are related to:
- Anemia
- Pain when sickle-shaped red blood cells block the flow
of blood to an organ
- Other more specific symptoms.
The general symptoms or signs of anemia are:
- Fatigue
(feeling very tired)
- Paleness
- Yellowing of the skin and eyes (jaundice)
- Shortness of breath.
Causes
People with sickle cell anemia inherit two genes, one from
each parent, that are variant (different from normal). The
variant genes are call sickle cell genes.
The sickle cell genes tell the body to make the variant
hemoglobin (hee-muh-glow-bin) that results in deformed red
blood cells. Hemoglobin is the protein in red blood cells that
carries oxygen to all parts of the body.
Children who inherit sickle cell genes from both parents will
have sickle cell anemia. Children who inherit the sickle cell
gene from only one parent will not have the disease. They will
have sickle cell trait. Persons with sickle cell trait:
- Generally have no symptoms
- Live normal lives
- Can pass the sickle cell gene on to their
children.
Treatment
Although there is no cure (other than bone marrow
transplantation) for sickle cell anemia, doctors know a great
deal about how to treat it.
People with sickle cell anemia need regular medical care. There
are doctors and clinics that specialize in treating people with
the disease.
The goal of treatment is to relieve pain, prevent infections,
and control complications if they occur. The treatments
include:
- Medications
- Blood transfusions
- Specific treatment for complications.
Treatment for Pain
Painful crises are the leading cause of emergency room visits
and hospitalizations. The usual treatment for acute pain crises
is giving pain-killing medications and increasing fluids. The
pain-killing medicines most often used are:
- Acetaminophen (a set a mee' noe fen)
- Nonsteroidal anti-inflammatory
drugs (NSAIDs)
- Opioids, like morphine, oxycodone, hydrocodone,
and others.
The treatment of patients with mild-to-moderate pain usually
begins with a NSAIDs or acetaminophen. If pain continues, an
opioid may be added. Moderate-to-severe pain is treated with
opioids. The opioid may be used alone or together with a NSAIDs
or acetaminophen.
Preventing Infections
Infection is a major complication of sickle cell anemia. In
fact, pneumonia is the leading cause of death in children with
the disease. Other infections common in persons with the
disease include meningitis, influenza, and hepatitis.
To prevent infections in babies and young children, treatment
methods include:
- Daily doses of penicillin. Treatment may begin
as early as 2 months of age and continue until the child is
at least 5 years old.
- Vaccinations for pneumonia, meningitis, influenza, and
hepatitis.
Children with sickle cell anemia should have a flu shot each
year.
If a child with sickle cell anemia shows early signs of an
infection, such as fever, it is very important to get treatment
right away.
Adults with sickle cell anemia should also have a flu
shot every year. They should also be vaccinated for
pneumonia.
Natural Remedies
In a preliminary study, individuals with pulmonary
hypertension (a life-threatening complication of sickle cell
anemia) received L-arginine in the amount of 100 mg per 2.2
pounds of body weight, three times per day for five days.
L-arginine treatment resulted in a significant improvement in
pulmonary hypertension, as determined by a 15% decline in the
pulmonary artery systolic pressure. Longer-term studies are
needed to confirm these preliminary results.
References for Sickle Cell Anemia
Article
-
Morris CR, Morris SM Jr, Hagar W, et
al. Arginine therapy: a new treatment for pulmonary
hypertension in sickle cell disease? Am J Respir
Crit Care Med 2003;168:63–9.
-
Osifo BO, Adeyokunnu A, Parmentier
Y, et al. Abnormalities of serum transcobalamins in
sickle cell disease (HbSS) in Black Africa.
Scand J Haematol 1983;30:135–40.
-
al-Momen AK. Diminished vitamin B12
levels in patients with severe sickle cell disease.
J Intern Med 1995;237:551–5.
-
al-Momen AK. Diminished vitamin B12
levels in patients with severe sickle cell disease.
J Intern Med 1995;237:551–5.
-
National Institutes of Health
Health
Related Websites
The National Cancer
Institute
The National Eye
Institute
The National Heart, Lung,
and Blood Institute
National Institute on
Aging
National Institute of
Allergy and Infectious Diseases
National Institute of
Arthritis and Musculoskeletal and Skin Diseases
National Institute of
Diabetes and Digestive and Kidney Diseases
National Institute on Drug
Abuse
National Institute of Mental
Health
National Institute of
Neurological Disorders and Stroke
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