Despite this, data suggests that the prognosis for CVS is generally favorable.Complications can include dehydration, dental caries, or an esophageal tear. Epidemiology
The average age at onset is 3–7 years, with described cases as young as 6 days and as old as 73 years. Typical delay in diagnosis from onset of symptoms is 3 years. Females show a slight predominance over males.One study found that 3 in 100,000 five-year-olds are diagnosed with the condition. Two studies on childhood CVS suggest nearly 2% of school-age children may have CVS. History
Cyclic vomiting syndrome was first described in France by Swiss physician Henri Clermond Lombard and first described in the English language by pediatrician Samuel Gee in 1882.It has been suggested that Charles Darwins adult illnesses may have been due to this syndrome. See also
Migraine

References
Further reading
External links
Cyclic Vomiting Syndrome Emedicine article
CVS page at the US National Digestive Diseases Clearinghouse, NIH Publication No. 04-4548
Cyclic Vomiting Syndrome on rarediseases.org
This pathogen and its associated syndrome (characterized by lethargy, fever, and pale mucous membranes) was previously observed in only wild sheep and goats in the region, and is the first observed occurrence of A. ovis in reindeer. In Australia, bovine anaplasmosis, caused by A. marginale, is found in only the northern and eastern parts of Australia where the cattle tick is present. It was probably introduced as early as 1829 by cattle from Indonesia infested with the cattle tick Boophilus microplus.The veterinarian George P. Broussard of New Iberia, Louisiana, conducted important research on anaplasmosis and brucellosis. References


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