The following is an excerpt....
BASICS
Description
An idiopathic chronic functional GI disorder characterized by discrete, recurrent, stereotypical episodes of high-intensity nausea and vomiting lasting hours to days, separated by symptom-free intervals
Cyclic vomiting syndrome (CVS) has a phasic pattern with four distinct phases.
- Interepisodic: Symptom-free period
- Prodromal: Often marked by nausea + abdominal pain; able to take oral medications
- Vomiting: Nausea, vomiting, and retching
- Recovery: Nausea remits and patient has recovered appetite, strength, and energy.
Epidemiology
Incidence
Unknown
Prevalence
- 0.04–1.9%
- Whites more affected than other races
- Predominant sex: Female > Male (55:45).
Risk Factors
- Family history of migraine headaches
- Depression
- Anxiety
- Chronic cannabis use
Genetics
- Possible matrilineal inheritence
- A3243G mitochondrial DNA mutation
- Ion-channel mutations
General Prevention
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