Vomiting and diarrhea without fever

A fever is not required for Gastroenteritis or Food Poisoning, and some people have mainly digestive symptoms. Medication effects, food intolerance and stress can also upset digestion. Rotavirus Infection is another possibility, particularly after contact with someone who is ill. Severe pain under the ribs or in the upper abdomen needs a different assessment because Gallstones or Pancreatitis may present with vomiting. The absence of fever does not show that the illness is minor.

Rest and take small sips of water or an oral rehydration drink rather than drinking a large amount at once. Once fluids stay down, choose gentle foods such as soup, rice, toast or bananas, then increase variety as tolerated. Avoid alcohol and foods that clearly worsen symptoms. Wash hands with soap and water and do not share towels. Note the timing, possible food exposures, medicines and whether urine remains regular; these details help a clinician judge fluid loss and likely causes.

Get urgent help for fainting, confusion, severe weakness, severe or increasing abdominal pain, blood or coffee-ground material in vomit, bloody or black stool, or trouble keeping any fluid down. Seek medical advice if urine becomes scarce or dark, dizziness persists when standing, or symptoms are not settling. A severe headache with a stiff neck, light sensitivity or confusion needs urgent assessment, because Meningitis can require immediate treatment.

Could a medicine, food exposure or infection explain these symptoms? How much fluid should I take, and when should I be examined? Are any of my existing conditions making dehydration more concerning?