What are the stages of Cyclic Vomiting Syndrome?

By  ,  National Institute of Health
Dec 28, 2012

CVS has four phases:

  • Symptom-free interval phase. This phase is the period between episodes when no symptoms are present.
  • Prodrome phase. This phase signals that an episode of nausea and vomiting is about to begin. Often marked by nausea—with or without abdominal pain—this phase can last from just a few minutes to several hours. Sometimes, taking medicine early in the phase can stop an episode in progress. However, sometimes there is no warning; a person may simply wake up in the morning and begin vomiting.
  • Vomiting phase. This phase consists of nausea and vomiting; an inability to eat, drink, or take medicines without vomiting; paleness; drowsiness; and exhaustion.
  • Recovery phase. This phase begins when the nausea and vomiting stop. Healthy color, appetite, and energy return.

 

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