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and vomiting in children may be sugesstive of a gastrointestinal infection
or obstruction , or a worm infestation or food poisoning . The most important thing is to prevent dehydration and electrolyte imbalance
caused by frequent vomiting.So apart from giving antiemetic like vomikind you need to give the child sips of WHO ORS solution or maintain hydration by giving plenty of home available fluids.
If the vomiting and pain stops with symptomatic therapy and there is no fever, diarrhoea, blood in stools or any such symptoms then you need not worry.
If any such symptoms develop or the pain and vomiting persist for more than a day then the next important step is to confirm the diagnosis which would need clinical examination by a pediatrician
or investigations like blood counts, xray abdomen if necessary.
The treatment would include a course of antibiotics like cephalosporins or ofloxacin etc, deworming if required.
If pain is severe then antispasmodics pain killers like dicyclomine and acetaminophen
may be prescribed by the doctor.
Hope I have answered your query.
Wishing your child a speedy recovery