Ross Hauser, MD. Cyclic vomiting syndrome is characterized by recurrent episodes of severe nausea and vomiting separated by symptom-free intervals. Episodes can last for hours to days and are often associated with migraine, autonomic dysfunction, anxiety, and stress. Despite ongoing research, the exact cause of cyclic vomiting syndrome remains unknown. Is the cause of cyclic vomiting syndrome in the neck? When we see patients with problems of cervical spine instability, they usually present with many symptoms, not just one. These symptoms are not confined to neck pain, arm numbness, headaches, or the traditional symptoms of cervical spine instability or cervical … Continue reading Cyclic vomiting syndrome – is its cause in the neck?