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Sydenham chorea
Definition
Sydenham chorea is a movement disorder that occurs with rheumatic fever.
Alternative Names
St. Vitus dance
Causes, incidence, and risk factors
Sydenham chorea is a major sign of acute rheumatic fever. The person may currently or recently have had the disease. Sydenham chorea may be the only sign of rheumatic fever in some patients.
Sydenham chorea occurs most often in girls before puberty, but may be seen in boys.
Symptoms
- Changes in handwriting
- Jerky, uncontrollable, and purposeless movements that look like twitches; the abnormal movements disappear during sleep
- Loss of fine motor control, especially of the fingers and hands
- Loss of emotional control, with bouts of inappropriate crying or laughing
- Symptoms of rheumatic fever (See: Acute rheumatic fever)
Signs and tests
There may be a history of sore throat for several weeks before Sydenham chorea.
Blood tests that may show signs of rheumatic fever include erythrocyte sedimentation rate (ESR).
Different blood tests may be done to identify whether the child may have a strep infection.
Treatment
Antibiotics used to kill the bacteria that cause rheumatic fever. The doctor may also prescribe antibiotics to prevent future rhematic fever infections. This is called preventive antibiotics, or antibiotic prophylaxis.
Symptoms will be treated as appropriate. Sedation may be needed in severe cases.
Support Groups
Expectations (prognosis)
Sydenham chorea usually clears up in a few months. In rare cases, an unusual form of Sydenham chorea may begin later in life.
Complications
No complications are expected.
Calling your health care provider
Call your health care provider if your child develops uncontrollable or jerky movements, especially if the child has recently had a sore throat.
Prevention
Pay careful attention to children's complaints of sore throats and get early treatment to prevent acute rheumatic fever. If there is a strong family history of rheumatic fever, be especially watchful, because your children may be more likely to develop this infection.
References
Bisno AL. Rheumatic fever. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 313.
Lang A. Other movement disorders. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 434.
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