* Infection: Diarrhea can be caused by a variety of infections, including bacteria, viruses, and parasites. These infections can be spread through contaminated food or water, or through contact with an infected person.
* Food intolerance: Some people have difficulty digesting certain foods, which can lead to diarrhea. Common food intolerances include lactose intolerance (an inability to digest the sugar in milk) and gluten intolerance (an inability to digest the protein in wheat, barley, and rye).
* Medications: Certain medications, such as antibiotics, chemotherapy drugs, and laxatives, can cause diarrhea as a side effect.
* Medical conditions: Some medical conditions, such as inflammatory bowel disease (IBD), celiac disease, and Crohn's disease, can cause chronic diarrhea.
* Stress: Stress can trigger diarrhea in some people.
In most cases, diarrhea is a temporary condition that will resolve on its own within a few days. However, if diarrhea is severe or persists for more than a few days, it is important to see a doctor to determine the cause and receive treatment.