Recurrent Vomiting

The underlying cause of cyclic vomiting syndrome is unknown. Some possible causes include genes, digestive difficulties, nervous system problems, and hormone imbalances. Specific bouts of vomiting may be triggered by: Colds, allergies or sinus problems. Emotional stress or excitement, especially in children.

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.

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.