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