The symptoms of cyclic vomiting syndrome often begin in the morning. Signs and symptoms include: 
Three or more recurrent episodes of vomiting that start around the same time and last for a similar length of time
Varying intervals of generally normal health without nausea between episodes
Intense nausea and sweating before an episode starts
 Other signs and symptoms during a vomiting episode may include: 
Abdominal pain
Diarrhea
Dizziness
Sensitivity to light
Headache
Retching or gagging
