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Allergic reactions
Allergic reactions

Chinese restaurant syndrome
Definition:
A collection of symptoms which some people experience a short while after eating Chinese cuisine. Monosodium Glutamate (MSG) has been implicated, but it has not been proven to be the agent that causes this condition.

Alternative Names:
"Hot-dog" headache; Glutamate-induced asthma; MSG (monosodium glutamate) syndrome complex

Causes, incidence, and risk factors:
In 1968, anecdotal reports of a series of reactions to Chinese meals were first described. MSG was reported to cause these symptoms, but subsequent research produced conflicting data. Many studies were performed, but a majority failed to show a connection between MSG and the symptoms that some people describe after eating Chinese food. For this reason, MSG continues to be used in some meals. However, it is possible that some people are particularly sensitive to food additives.
Symptoms:
Signs and tests:

Chinese restaurant syndrome is best diagnosed by the symptoms that a person describes. However, the following are helpful in diagnosis as well:

  • history of ingesting chinese food within past 2 hours
  • history of ingesting any food that may contain monosodium glutamate within past 2 hours

    Any of the above accompanied by any of the following tests:

    • abnormal heart rhythm on an electrocardiogram
    • rapid heart rate
    • decreased air entry into the lungs
Treatment:

Treatment will depend upon the symptoms. Most -- like headache or flushing -- need no treatment.

Treatment is reserved for life-threatening symptoms similar to any other severe allergic reaction. They include swelling of the throat, chest pain and heart palpitations, and shortness of breath. For these symptoms, immediate medical attention is required!
Expectations (prognosis):

Chinese restaurant syndrome is often benign and most people recover on their own. Their prognosis is excellent. People who have experienced life-threatening reactions need to be extremely cautious about what they eat, and always carry medication for emergency treatment.
Calling your health care provider:

If you experience any symptoms such as shortness of breath, heart palpitations and chest pain, or swelling of the lips or throat, go to the nearest emergency room immediately.
Review Date: 9/9/2001
Reviewed By: Poune Saberi, M.D., M.P.H., Family Practice and Community Medicine. University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network.
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