What is cyclic vomiting syndrome (CVS)?

What is cyclic vomiting syndrome (CVS)?

Cyclic vomiting syndrome (CVS) is a condition where you suffer from sudden, repeated attacks of severe nausea, vomiting and exhaustion. These symptoms come with no apparent cause. Each attack can last from a few hours to several days. Attacks may be so severe that you’re bedridden or must go to the emergency room or hospital. Often, the symptoms start early in the morning. Following an episode, you’re free of symptoms and return to normal health.

Both males and females of any age may be affected. CVS may last for months, years or decades. However, symptoms do not occur each day. The attacks generally occur several times a year, but could be up to once or twice a month. If you’re having daily symptoms for weeks or a month, these are due to something other than cyclic vomiting syndrome.

The symptoms, time of day, frequency, severity and length of each episode of CVS are usually the same for any one person. However, these may be different from patient to patient.