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Gastroenteritis (Food Poisoning)
Gastroenteritis is inflammation of the stomach and intestines, usually from an infection, causing diarrhoea and vomiting. Most cases settle on their own with fluids.
Causes & risk factors
- Viruses (a very common cause)
- Bacteria from contaminated food or water
- Poor food hygiene or unsafe water
- Parasites in some cases
- Close contact with an infected person
Common symptoms
Tests & diagnosis
- Usually diagnosed from symptoms
- Stool test if severe or prolonged
- Electrolytes if dehydrated
- Kidney function if severe
Treatment & management
- Plenty of fluids and oral rehydration salts (ORS)
- Rest and gradual return to light food
- Avoiding sugary and fatty foods for a while
- Antibiotics only for specific bacterial infections
- Careful hand and food hygiene to prevent spread
When to see a doctor urgently
- Signs of dehydration: little urine, dizziness, dry mouth — urgent
- Blood in stools or a very high fever
- Vomiting so much you cannot keep fluids down
- Symptoms in babies, elderly or the very frail
Not a diagnosis. MedDroid gives general educational information about gastroenteritis (food poisoning). It cannot examine you, diagnose or prescribe — always confirm with a qualified doctor.
Frequently asked questions
What is the most important treatment?
Staying hydrated. Oral rehydration salts replace lost fluids and salts and are the mainstay of care for most cases.
Do I need antibiotics for food poisoning?
Usually not. Most cases are viral or self-limiting. Antibiotics are only used for certain confirmed bacterial infections.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.