# What are the main symptoms of food poisoning?

Canonical page: https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning
Language: en
Category: gastroenterology
Publisher: ClinicsJo
Published: 2026-09-13T08:09:51.866Z
Content updated: 2026-09-13T08:09:51.866Z
Translation (ar): https://clinicsjo.com/ar/faq/what-are-the-main-symptoms-of-food-poisoning

Food poisoning, also known as a foodborne illness, is a condition resulting from consuming food or drink contaminated with harmful microorganisms such as bacteria or viruses, or even chemicals. Symptoms and their severity vary based on the type of contaminant, but there is a common set of symptoms that often appear in those affected [\[1\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S1>).

## Common Symptoms of Food Poisoning

The main symptoms of food poisoning typically include gastrointestinal disturbances. Notable symptoms include:

- **Upset stomach:** A general feeling of discomfort or pain in the stomach area [\[1\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S1>).

- **Abdominal cramps:** Sharp pains or spasms in the abdomen [\[1\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S1>).

- **Nausea and vomiting:** The urge to vomit, which may be followed by actual vomiting [\[1\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S1>).

- **Diarrhea:** Loose or watery stools, which may be frequent [\[1\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S1>).

- **Fever:** An increase in body temperature [\[1\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S1>).

In most cases, these symptoms are acute, meaning they appear suddenly and last for a short duration, and most people recover on their own [\[1\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S1>).

## When should you worry about dehydration?

Dehydration is a potential and serious complication of food poisoning, especially with frequent vomiting and diarrhea [\[1\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S1>). It is essential to replace lost fluids and electrolytes to prevent dehydration [\[1\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S1>). Signs of dehydration that warrant concern and indicate insufficient fluid replacement include:

- Little or no urination.

- Dry mouth and extreme thirst.

- Dizziness or lightheadedness when standing.

- Extreme lethargy or confusion.

- Lack of tears in children.

If any of these signs appear, it is important to seek immediate medical attention. Some patients, especially in severe cases, may need hospital treatment to receive intravenous (IV) fluids [\[1\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S1>).

## Do I need a stool test?

Not everyone with food poisoning requires a stool test. In many mild cases, recovery occurs spontaneously without needing to identify the exact cause [\[1\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S1>). However, a doctor may recommend a stool test (stool culture) in certain situations, such as:

- If symptoms are severe or do not improve after a few days.

- The presence of blood or mucus in the stool.

- If the patient belongs to groups at higher risk for complications, such as the elderly, young children, pregnant women, or people with weakened immune systems [\[3\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S3>).

- If there is a suspicion of a specific bacterial infection requiring antibiotic treatment [\[2\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S2>).

A stool test helps identify the type of bacteria causing the infection, enabling the doctor to prescribe appropriate treatment, such as antibiotics if necessary [\[2\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S2>). It is important to note that antibiotics do not treat all types of food poisoning and should only be taken with a prescription after identifying the bacterial cause [\[2\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S2>).

## When should you see a doctor?

You should consult a doctor in the following cases:

- Appearance of severe signs of dehydration mentioned previously.

- Persistent vomiting or diarrhea for more than a few days.

- Fever rising to 39 degrees Celsius (102 degrees Fahrenheit) or higher.

- Presence of blood or pus in the stool.

- Severe abdominal pain that does not subside.

- If you are pregnant, have a weakened immune system, are elderly, or are a young child [\[3\]](<https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#source-S3>).

For more information on fluid management and stool analysis in cases of food poisoning, you can visit [Food Poisoning: Fluid Replacement and Stool Analysis (Arabic)](<https://clinicsjo.com/ar/articles/food-poisoning-fluid-replacement-stool-analysis>).

Always remember that this information is not a substitute for consulting a healthcare professional. If you have any concerns about your health, it is always best to speak with your doctor.

## Medical references

- [Foodborne Illness](<https://medlineplus.gov/foodborneillness.html>)

- [Bacteria Culture Test](<https://medlineplus.gov/lab-tests/bacteria-culture-test/>)

- [Food Safety Basics](<https://www.cdc.gov/food-safety/about/>)

General health education; not a substitute for individualized clinical assessment.

Citation URL: https://clinicsjo.com/en/faq/what-are-the-main-symptoms-of-food-poisoning#answer