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More about Cyclic Vomiting Syndrome:
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The most important and difficult aspect of CVS is to be sure there is not an acute and life-threatening event in progress. So many diseases can cause vomiting—from bowel obstruction to epilepsy—that an accurate and timely diagnosis is critical. Because there is no way to prove the diagnosis of CVS, the physician must instead disprove every other diagnosis. This can be tedious, expensive, exhausting, and involve almost every system in the body. The first episode may be diagnosed as a stomach flu when nothing more serious turns up. Only after several episodes and several fruitless searches for a cause will a physician normally consider the diagnosis of CVS.
— J. Ricker Polsdorfer, MD
