What Can Cause Concurrent Sore Throat and Diarrhea?

Simultaneous diarrhoea and sore throat are frequently indicative of a viral infection. Among the possible reasons are COVID-19, the flu, and the common cold.

Diarrhoea and sore throats each have hundreds of possible causes. When both symptoms are present, an infection is frequently indicated.

There is a noninfectious explanation for both diarrhoea and sore throat, however, it is less common.

Find out more about the possible causes of these two symptoms by reading on.

What can cause a sore throat and diarrhea together?

These are a few possible causes of your diarrhoea and sore throat.


Influenza viruses are the cause of the flu. Among the symptoms are:
  • fever
  • cough
  • headache
  • sore throat
  • runny nose
  • general unwellness (malaise)
  • fatigue
  • body aches
Additionally, the flu can cause gastrointestinal (GI) symptoms like:
  • nausea
  • diarrhea
  • vomiting

Adenovirus infection

Respiratory illnesses are frequently caused by adenoviruses. Generally, 2–14 days after exposure, they elicit flu-like symptoms. They may also result in intestinal irritation and diarrhoea.


A coronavirus known as SARS-CoV-2 is the source of COVID-19. Diarrhoea and sore throat are among the many symptoms linked to COVID-19. Additional typical symptoms consist of:
  • fever and chills
  • cough
  • shortness of breath
  • stuffy nose
  • runny nose
  • loss of taste or loss of smell
  • headache
  • fatigue
  • body aches
  • nausea and vomiting

Common cold

A rhinovirus is the most prevalent cause of the common cold. Frequently, a sore throat is the first sign.

Although it's not a common sign of a cold, diarrhoea might happen.

The following viruses can also induce colds:
  • coronaviruses
  • respiratory syncytial virus (RSV)
  • parainfluenza viruses


Noroviruses can induce stomach flu-like symptoms or stomach bugs. The following symptoms usually appear 12 to 48 hours after exposure:
  • diarrhea
  • nausea
  • abdominal pain
  • vomiting
Through their ability to produce vomiting and dehydration, noroviruses can indirectly cause sore throats.

Stomach flu

Stomach flu is frequently caused by noroviruses. Additional reasons consist of:
  • rotaviruses
  • adenoviruses
  • astroviruses

Strep throat

A sore throat is the most typical sign of strep throat. Although it isn't a symptom, diarrhoea may arise from the antibiotics used to treat the infection.

Food allergy

Following are some signs of food allergies:
  • tingling or itching in your mouth
  • hives
  • nasal congestion
  • abdominal pain
  • diarrhea
  • nausea and vomiting
  • dizziness
  • swelling of your throat, lips, or face, which may contribute to a sore throat
  • wheezing

Food poisoning

Diarrhoea and vomiting are common symptoms of food poisoning. A painful throat may result indirectly from vomiting.

Acute gastritis

Inflammation of the stomach lining, often brought on by an infection, is known as acute gastritis. One of the first symptoms is frequent diarrhoea. Having a vomiting fit could irritate your throat.

Irritable bowel syndrome (IBS)

One common symptom of IBS is diarrhoea. According to research, GERD, or gastric reflux disease, is common in IBS sufferers. Itching in the throat might result from GERD.


Your body may get dehydrated as a result of diarrhoea, and dry throats can result from dehydration. It may be more vulnerable to damage if the throat is dry.

Mixed causes

Your sore throat and diarrhoea could be caused by different things, such as different illnesses.

Sore throat and diarrhea alongside other symptoms

Here are a few possible reasons why you can have diarrhoea along with other symptoms, like a sore throat.

Diarrhoea, fever, weariness, and sore throat
  • flu
  • adenoviruses
  • common cold
  • norovirus
  • stomach flu
  • COVID-19
headache, sore throat, diarrhoea, and stomach cramps

Headache, sore throat, diarrhoea, and stomach cramps could be brought on by:
  • flu
  • adenoviruses
  • common cold
  • dehydration
  • COVID-19
Nausea, diarrhoea, and sore throat

Nausea, diarrhoea, and sore throat may be brought on by:
  • flu
  • stomach flu
  • gastritis
  • adenoviruses
  • COVID-19
  • norovirus

When to contact a doctor

It is advised that you speak with a physician if you have:
  • diarrhoea or a sore throat that does not go away after a week or so
  • Your stool contains blood.
  • You appear to be dehydrated.

Diagnosing the underlying cause

Often, a doctor can identify a sore throat just by looking at your symptoms. They usually prescribe a throat swab if they suspect strep throat.

Your doctor could prescribe stool tests or a colonoscopy if your diarrhoea is severe or chronic.

Sore throat and diarrhea treatment

The following are some possible remedies for diarrhoea and a sore throat:

Home remedies

Among the natural cures for a sore throat are:
  • honey
  • chamomile tea
  • peppermint oil sprays or peppermint tea
  • gargling warm salt water
Among the natural cures for diarrhoea are:
  • drinking plenty of fluids
  • probiotics
  • bismuth subsalicylate (Pepto-Bismol)
The BRAT diet, comprised:
  • bananas
  • applesauce
  • toast
  • rice
Steer clear of meals like:
  • alcohol
  • prunes
  • artificial sweeteners
  • beans
  • coffee

Medical treatment

Antibiotics may be recommended by a physician for bacterial throat infections. Treatment options for persistent diarrhoea include:
  • antibiotics or antiparasitic medications
  • oral rehydration solutions
  • intravenous fluids


In individuals with healthy immune systems, the majority of viral infections are moderate. Seeking medical assistance right away is crucial if you experience symptoms that are worrying, like breathing difficulties or a high fever.

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