# What is the main difference between acute and chronic diarrhea? Canonical page: https://clinicsjo.com/en/faq/what-is-the-main-difference-between-acute-and-chronic-diarrhea Language: en Category: gastroenterology Publisher: ClinicsJo Published: 2026-09-13T08:09:51.449Z Content updated: 2026-09-13T08:09:51.449Z Translation (ar): https://clinicsjo.com/ar/faq/what-is-the-main-difference-between-acute-and-chronic-diarrhea Diarrhea is generally defined as loose, watery stools occurring three or more times in a single day [\[1\]](). The main difference between acute and chronic diarrhea lies in the duration. Acute diarrhea is a common condition that lasts for a short period, typically a day or two, and may resolve on its own [\[1\]](). Chronic diarrhea, however, is diarrhea that lasts for at least four weeks, and symptoms may be persistent or intermittent [\[1\]](). ## Causes of Acute and Common Diarrhea Acute diarrhea is often caused by a bacterial, viral, or parasitic infection, which may be transmitted through contaminated food or water [\[1\]](). For example, rotavirus is the most common cause of acute diarrhea in children [\[1\]](). Certain medications, such as antibiotics, cancer drugs, and magnesium-containing antacids, can also cause acute episodes of diarrhea [\[1\]](). ## When Does Diarrhea Become Chronic? When diarrhea exceeds four weeks in duration, it is classified as chronic diarrhea [\[1\]](). In this case, the diarrhea may not be just a transient gastroenteritis; it could be a symptom of a chronic disease or an underlying health issue that requires medical evaluation [\[1\]](). Common causes of chronic diarrhea can include food intolerances such as lactose intolerance, diseases affecting the digestive system like Crohn's disease, or colon function problems like irritable bowel syndrome (IBS) [\[1\]](). In some cases, a clear cause for chronic diarrhea may not be identified [\[1\]](). ## Associated Symptoms That Require a Doctor's Visit Although diarrhea is often harmless and resolves on its own, there are warning signs that necessitate a doctor's visit. Adults should see a doctor if diarrhea persists for more than two days, if signs of dehydration appear—such as decreased urination and extreme thirst—or if there is severe abdominal or rectal pain, or a fever of 38.9°C (102°F) or higher [\[1\]](). Attention should also be paid to the presence of blood or pus in the stool, or if the stool is black and tarry [\[1\]](). For children, parents or caregivers should contact a doctor if diarrhea lasts for more than 24 hours or if they exhibit any of the symptoms mentioned above, as dehydration can be particularly dangerous for infants and young children [\[1\]](). ## Diagnosis and Treatment To determine the cause of diarrhea, a doctor may perform a physical examination, ask about medications you are taking, and request [stool or blood tests]() (Arabic) to check for bacteria, parasites, or other signs of illness or infection [\[1\]]() [\[2\]](). In cases of chronic diarrhea, the doctor may recommend additional examinations to look for signs of an underlying disease [\[1\]](). Treatment for diarrhea focuses on replacing lost fluids and electrolytes to prevent dehydration [\[1\]](). You may need medication to stop the diarrhea or treat the infection, depending on the cause [\[1\]](). Adults are advised to drink water, juices, sports drinks, caffeine-free sodas, and salty broth [\[1\]](). As symptoms improve, soft and bland foods can be eaten [\[1\]](). Children should be given oral rehydration solutions to replace lost fluids and electrolytes [\[1\]](). It is important to consult a doctor before using any herbal remedies such as chamomile, especially if you are taking other medications, as herbs may interact with certain drugs [\[3\]](). ## Medical references - [Diarrhea]() - [Bacteria Culture Test]() - [Chamomile]() General health education; not a substitute for individualized clinical assessment. Citation URL: https://clinicsjo.com/en/faq/what-is-the-main-difference-between-acute-and-chronic-diarrhea#answer