Vomiting

‘A forcible ejection of food, or any other substance, from the stomach, through the cesophagus and mouth. It is either idiopathic, when arising from a cause in the stomach itself; or. symptomatic, when originating from diseases seated in any other part of the body. Its immediate cause is an antiperistaltic, ‘spasmodical, convulsive con- striction of the stomach, and pre ure of the diaphragm and abdominal muscles. It isian effort of nature to expel whatever molests or is troublesome in the stomach,