Food poisoning

Low urgency
Common-

Food poisoning occurs after ingestion of contaminated food or water.

Among the most frequent causes are handling with dirty hands, lack of cooking hygiene, spoiled food, unpasteurized dairy products and ingestion of water from wells or streams, or water from a city or town that has not been treated, etc.

Symptoms include abdominal pain (cramping), nausea and vomiting, diarrhea, fever and chills, headache and generalized weakness.

Diagnosis is made by clinical history, complete physical examination, blood and stool tests. 

Treatment is based on symptom control, adequate rehydration and, depending on the case, the use of antibiotics. 

Bibliographic references
  1. David WK Acheson, Differential diagnosis of microbial foodborne disease. UpToDate. Apr 12, 2016.
  2. Scharff RL. Health-related costs from foodborne illness in the United States. The Produce Safety Project at Georgetown University. www.producesafetyproject.org (Accessed on April 19, 2010).
  3. Crim SM, Griffin PM, Tauxe R, et al. Preliminary incidence and trends of infection with pathogens transmitted commonly through food - Foodborne Diseases Active Surveillance Network, 10 U.S. sites, 2006-2014. MMWR Morb Mortal Wkly Rep 2015; 64:495.
  4. Gould LH, Walsh KA, Vieira AR, et al. Surveillance for foodborne disease outbreaks - United States, 1998-2008. MMWR Surveill Summ 2013; 62:1.
  5. Regina C. LaRocque, Edward T. Ryan, Stephen B. Calderwood. Diarreas infecciosas agudas e intoxicación alimentaria por bacterias. Harrison. Principios de Medicina Interna. Volumen 2. 19º Edición. 852-857.
Author
Dr. Oscar Garcia-Esquirol
Copyright
© TeckelMedical 2026

Symptoms

    Intermittent intense abdominal pain


    Diarrhea


    Vomiting


    Signs of dehydration


    Shivers

Symptoms to watch out for

Vomit that prevents ingestion of beverages, food or medication
Blurry vision
Bloody vomit
Fever (temperature higher than 100.4 ºF)
Diarrhea for more than 1 week
Muscle weakness
Signs of dehydration: more tiredness than usual, dizziness, dry mouth and tongue.

Self-care

Maintain a fluid intake of 6 - 8 cups per day.
Skip meals for a few hours and then start eating gradually.
Limit the consumption of milk and other dairy products.
Relative rest, rest until symptoms subside.
Reduce caffeine consumption.
Reduce tobacco consumption.
Reduce alcohol consumption.
Consult with your primary care physician regarding the prescription of antibiotics.