Cyclic vomiting syndrome (US English) or cyclical vomiting syndrome (UK English) (CVS) is a condition whose symptoms are recurring attacks of intense nausea, vomiting and sometimes abdominal pain and/or headaches or migraines. Cyclic vomiting usually develops during childhood usually ages 3–7; although it often remits during adolescence, it can persist into adult life. . Cases in recent years may also state that it can appear after an deep bodily or blood infection that strains the immunosystem and have an inflammatory effect on the nervous system or the organism as a whole through foreign RNA invasion making the patient susceptible to CVS symptoms, therefore showing up in adult years as well.Read more on Wikipedia
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