Curr Pain Headache Rep. 2018 Mar 19;22(4):30. doi: 10.1007/s11916-018-0684-6. Donnet A1, Redon S2. Abstract PURPOSE OF REVIEW: Cyclic vomiting syndrome (CVS) is a misrecognized and probably underdiagnosed episodic syndrome associated with migraine, occurring preferentially in childhood. Attacks are stereotyped for