My 7 year old son started vomiting last night but is not running temperature of fever. What can be done?

Clear liquids. Vomiting is associated with a number of conditions, including infections, swallowed mucus from coughing, elevated pressure inside the cranium. If you child has any signs of headache, prolonged fever, dehydration, can not keep down clear liquids, please follow up with your physician. Clear liquids, keeping well hydrated and eating small amounts of crackers may help.