Functional vomiting can be diagnosed using criteria proposed at the Rome II conference.
Criteria - all of the following:
(1) A duration of symptoms >= 12 cumulative weeks over the past 12 months (may or may not be consecutive).
(2) Frequent episodes of vomiting (>= 1 episode per day for >= 3 days per week)
(3) Exclusion of underlying physical disease following a complete examination.
(4) Exclusion of self-induced and/or medication-induced vomiting.
(5) Exclusion of an eating disorder, rumination or major psychiatric disorder.
Exclusions for physical disease:
(1) gastrointestinal disorder, including obstruction, delayed gastric emptying, GERD or other conditions
(2) neurologic disorder, including autonomic dysfunction
(3) metabolic disorder, including electrolyte and endocrine disorders
(1) functional dyspepsia (consider if vomiting occasional)
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Specialty: Gastroenterology, Pedatrics, Hematology Oncology, Surgery, general, Pharmacology, clinical