What can trigger an episode of cyclic vomiting syndrome (CVS)?

What can trigger an episode of cyclic vomiting syndrome (CVS)?

Anxiety, a panic attack, or something that is emotionally upsetting may bring on your CVS. Also, the following may trigger CVS:

• Respiratory or sinus infections or the flu.
• Reactions to certain foods such as chocolate or cheese, caffeine, or the food additive MSG (monosodium glutamate).
• Changes of season (symptoms are more common in fall and winter).
• Menstrual periods.
• Motion sickness.
• Stress and anxiety.
• Prolonged fasting.
• Physical exhaustion.