Fever, vomiting and abdominal discomfort or pain constitute a gastroenteritis
syndrome. Considering that the child is generally unwell, the causes could be diverse. At 6 years of age, a bacterial infection and any cause of a surgical or acute abdomen
must be excluded. This shall be through a stool exam, culture and sensitivity tests. Depending on the state, an abdominal ultrasound could also be useful.
A complete blood and markers of inflammation also be useful indicators of the origin of the syndrome. A physical examination by a physician shall determine whether the child is dehydrated or not, not tenderness in abdomen if any and specify patterns and appreciate general patient outlook.
This examination compounded by a past medical history and other examinations shall be key in making a definitive diagnosis and drawing up an appropriate treatment plan.
I suggest you take the child to your family physician or pediatrician
for a proper evaluation for severe abdominal or surgical causes to be excluded. Typhoid fever
, shigellosis, appendicitis
or even ,malaria at times might mimic such clinical syndromes.
Thanks for your question and hope this helps,