Body aches and diarrhea are symptoms that sometimes occur together. They may resolve on their own or can be a sign of a medical condition.
In this article, we outline seven possible causes of body aches with diarrhea, along with their associated symptoms and treatment options. We also provide information on when to see a doctor.

Body aches and diarrhea are symptoms of a condition, rather than conditions in themselves.
Body aches
Body aches may affect a specific area of the body or the entire body. The pain and discomfort from these aches can range from mild to severe.
Depending on the cause, body aches may be either sudden and temporary or long lasting. Doctors refer to these as acute and chronic, respectively.
Diarrhea
The term diarrhea refers to the passing of loose, watery stools
Other symptoms may accompany diarrhea,
- an urgent need to use the bathroom
- an inability to control bowel movements
- stomach pain and cramping
- nausea
If diarrhea results from an infection, people
- vomiting
- bloody stools
- fever and chills
- dizziness or lightheadedness
Below are some of the possible causes of body aches with diarrhea.
1. Food poisoning
Food poisoning can occur when a person consumes food or drink that contains harmful pathogens, such as bacteria or viruses. Many different pathogens can cause food poisoning,
- Staphylococcus aureus bacteria
- Salmonella bacteria
- Escherichia coli bacteria
- norovirus
The pathogens responsible for food poisoning can come from the following sources:
- undercooked meats
- unpasteurized milk
- improperly washed fruits or vegetables
The symptoms of food poisoning can differ depending on the pathogen responsible. However, some general symptoms
- stomach cramps
- diarrhea
- nausea and vomiting
- fever
- muscle aches
The symptoms may develop
Treatment
The symptoms of food poisoning
- drinking plenty of fluids to replace water and electrolytes lost during bouts of vomiting or diarrhea
- taking over-the-counter (OTC) medications, such as loperamide (Imodium) and bismuth subsalicylate (Pepto-Bismol), to help alleviate diarrhea in adults
- eating plain foods, such as crackers
- using oral rehydration solutions, for people with a weakened immune system and children (only after checking with a doctor)
If a person needs medical treatment, a doctor will first have to establish whether the food poisoning is due to a bacterium, parasite, or virus. If bacteria or parasites are responsible, the doctor may prescribe antibiotics.
A doctor may also prescribe or recommend OTC probiotics to help reduce the duration of diarrhea.
2. Viral gastroenteritis
Viral gastroenteritis (VG) is the medical term for a viral infection of the intestines. People can catch such viruses as a result of coming into contact with the stool or vomit of a person who has the infection.
Symptoms of VG include:
- watery diarrhea
- pain and cramping in the abdomen
- nausea and vomiting
- fever
- body aches
Treatment
People who have VG can use OTC medications, such as Imodium and Pepto-Bismol, to treat diarrhea. They should also make sure that they replace any lost fluids and electrolytes to prevent dehydration.
3. Influenza
Influenza, or flu, viruses are a group of viruses that can cause seasonal flu. They are
Some symptoms of the flu include:
- cough
- sore throat
- runny or stuffy nose
- fever
- body aches and headaches
- occasionally, diarrhea and vomiting (more common in children)
Treatment
In
If a person is experiencing severe flu symptoms, a doctor may prescribe antiviral medication.
Doctors also
4. Lactose intolerance
Lactose intolerance is a digestive disorder in which the body is unable to break down and digest lactose. Lactose is a naturally occurring sugar present in milk and dairy products.
The symptoms of lactose intolerance include:
- bloating
- gas or flatulence
- diarrhea
- nausea and vomiting
- stomach cramping and discomfort
- painful or aching muscles or joints
Treatment
The
People can also try taking lactase tablets or drops immediately before consuming foods or drinks containing lactose. Lactase is an enzyme that breaks down lactose, thereby preventing the symptoms of lactose intolerance. However, lactase products are not suitable for young children or people who are pregnant or breastfeeding.
5. Gluten sensitivity
Gluten sensitivity is a condition in which a person experiences symptoms in response to eating foods containing gluten. Examples of such foods include:
- wheat
- barley
- rye
Common symptoms of gluten sensitivity include:
- bloating or gas
- diarrhea or constipation
- stomach pain
- nausea
- headaches
- joint pain
- numbness in the legs, arms, or fingers
- brain fog
- fatigue
Treatment
A person who experiences symptoms after eating foods containing gluten should see their doctor, who will need to rule out more serious conditions, such as celiac disease.
A person should not try a gluten-free diet until they have had a blood test for celiac disease. Following such a diet could reduce the accuracy of the test.
If tests confirm that a person does have gluten sensitivity, their doctor will recommend cutting gluten out of the diet to prevent symptom flare-ups.
6. Celiac disease
Celiac disease is an autoimmune disorder in which the body cannot process gluten. It is similar to gluten sensitivity but more severe. In people with celiac disease, the consumption of gluten causes the immune system to attack and destroy healthy cells in the small intestine.
The symptoms of celiac disease include:
- bloating and gas
- stomach aches and pain
- nausea and vomiting
- diarrhea or constipation
- pale, foul-smelling stools that float
Treatment
The
People with celiac disease should also take steps to limit their exposure to gluten in other ways. For instance, they can check with a pharmacist whether medications or supplements contain gluten before taking them. They can also read labels on cosmetics and household items to ensure that they do not contain gluten.
7. Irritable bowel syndrome
Irritable bowel syndrome (IBS) is the collective term for a group of symptoms that affect the digestive system. According to the
There are
- IBS with constipation
- IBS with diarrhea
- IBS with mixed bowel habits
Symptoms of IBS include:
- stomach pain and aches
- bloating
- diarrhea, constipation, or both
- white mucus in stools
Treatment
People may be able to reduce the symptoms of IBS by making the following changes to their diet:
- including more fiber
- avoiding or minimizing gluten
- consuming fewer gas-producing foods
Using techniques to manage stress, such as meditation, mindfulness, and yoga, can also be beneficial.
If a person has IBS with diarrhea, a doctor may prescribe medications such as Imodium or rifaximin (Xifaxan) to treat the diarrhea.
Doctors may also prescribe antispasmodics to help treat stomach pain and cramping.
Most conditions that cause body aches and diarrhea do not require medical attention. However, a person should see a doctor if their symptoms become severe or persistent or start to interfere with their daily activities. The doctor will work to diagnose the cause of the symptoms and provide appropriate treatments.
Anyone who experiences any of the following symptoms should
- frequent watery diarrhea lasting for more than 2 days, especially if vomiting occurs alongside it
- black and tarry stools or stools that contain blood
- severe pain in the abdomen or rectum
- frequent vomiting
- a fever of 102°F (38.89°C) or higher
- lightheadedness
- diarrhea lasting more than a week
Several conditions can cause both body aches and diarrhea. Most conditions that cause these symptoms go away by themselves without any need for medical treatment.
However, severe, persistent, or recurrent episodes of body aches and diarrhea may signal an underlying medical condition that requires management. Examples of such conditions include food intolerances and sensitivities and other types of digestive issues.
Receiving a diagnosis can help a person gain access to appropriate treatments. These treatments should alleviate the symptoms and allow the individual to carry on with their normal daily activities.