Cyclic Vomiting Syndrome (CVS) is often triggered by factors like stress, infections, certain foods (e.g., chocolate, cheese), lack of sleep, hormonal changes, or physical exhaustion, and these triggers can vary from person to person. Identifying your specific triggers—often through a symptom diary—can help you avoid them and significantly reduce the frequency and severity of episodes. You should seek medical advice if vomiting episodes are severe, frequent, lead to dehydration, or disrupt daily life, as proper diagnosis and management (including medications and lifestyle strategies) are important for control.