SymptomsBy Mayo Clinic Staff
Food poisoning symptoms vary with the source of contamination. Most types of food poisoning cause one or more of the following signs and symptoms:
- Watery diarrhea
- Abdominal pain and cramps
Signs and symptoms may start within hours after eating the contaminated food, or they may begin days or even weeks later. Sickness caused by food poisoning generally lasts from a few hours to several days.
When to see a doctor
If you experience any of the following signs or symptoms, seek medical attention.
July 24, 2014
- Frequent episodes of vomiting and inability to keep liquids down
- Bloody vomit or stools
- Diarrhea for more than three days
- Extreme pain or severe abdominal cramping
- An oral temperature higher than 101.5 F (38.6 C)
- Signs or symptoms of dehydration — excessive thirst, dry mouth, little or no urination, severe weakness, dizziness, or lightheadedness
- Neurological symptoms such as blurry vision, muscle weakness and tingling in the arms
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