The evaluation of food poisoning begins with a medical history and physical examination.
Physical findings in those with food poisoning may include:
Physical findings in adults, children, and infants with
dehydration may include:
Additional signs of
dehydration in infants include:
- Dry diapers:
- Lack of tears
- Sunken soft spot on the head
- Unusual sleepiness
- Weight loss
Tests are required to confirm the diagnosis of food poisoning due to
bacterial gastroenteritis. A
stool culture is performed on a stool specimen, in order to detect a bacterial infection. Stool may also be tested for C. difficile toxin, which is used to diagnose
pseudomembranous colitis. A stool examination for ova and parasites may be helpful to detect parasitic infections.
A
stool culture can detect:
Additional tests that may be used to evaluate food poisoning include:
