Written by Dr J S S Dev

Medically reviewed by Dr. Israa Ismail

Updated on June 05, 2025

Chronic Loose Stools: Identifying Underlying Health Conditions

Are daily bouts of loose stools (“daily diarrhoea” or “constant diarrhoea”) disrupting your life? You’re not alone. Chronic loose stools can be a daily challenge that affects work, social life, and overall health.

We aim to empower you with knowledge. We will help you provide insights into potential causes and the importance of understanding what’s happening inside your gut. Let’s look into the causes of chronic loose stools and find ways to bring comfort and balance into your daily routine.

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Chronic Loose Stools: A Deeper Look

Chronic loose stools, often referred to as chronic diarrhoea, is a gastrointestinal condition. It will cause persistent and recurrent watery or loose bowel movements over an extended period. It differs from occasional diarrhoea in frequency, duration, and consistency of bowel movements.

Frequency

Chronic loose stools involve frequent bowel movements. It typically occurs three or more times a day on an ongoing basis, often for several weeks or months.

Nevertheless, Occasional diarrhoea is infrequent and typically lasts for a shorter duration, often just a few days.

Duration

Chronic loose stools last for more than four weeks and can persist for months or even years. Occasional diarrhoea is short-term and usually goes away on its own in a few days.

Consistency

Stool consistency in chronic loose stools is usually watery, loose, or mushy. Chronic loose stools don’t have the firm, defined shape of normal stool. Occasional diarrhoea can also be loose or watery, but it often starts suddenly and can vary in consistency. It’s important to tell the difference, as their causes and treatments may differ.

Chronic Loose Stools: What Could Be Causing It?

Chronic stools can have some causes. So, let’s examine the most important ones to help you understand better.

1. Gastrointestinal disorders: Chronic diarrhoea can result from conditions such as celiac disease, inflammatory bowel disease, and irritable bowel syndrome (IBS).

2. Infections: Chronic conditions affecting your gastrointestinal system can include things like parasitic infections or an overgrowth of bacteria, leading to ongoing loose stools. 

3. Medications: The sensitive equilibrium in your stomach may be disrupted by antibiotics and various other drugs, potentially causing persistent loose stools. 

4. Food sensitivities: Individuals with fructose malabsorption or lactose intolerance might continue to experience loose stools.

5. Functional bowel disorders: Issues such as functional diarrhoea are identified when no obvious cause is apparent. This may also result in ongoing loose stools. 

6. Medications: Certain drugs, particularly antibiotics, can disturb your gut flora and result in persistent loose stools. Adjusting your medication or adding probiotics might be good. 

7. Malabsorption syndromes: Conditions such as chronic pancreatitis or celiac disease impair nutrient absorption, potentially leading to persistent diarrhoea. 

8. Systemic diseases: Disorders like diabetes, thyroid dysfunctions, or neuropathy can influence bowel function, which may also result in chronic loose stools. 

It’s crucial to understand that ongoing loose stools could indicate a more serious health condition.

Let’s explore and find out the various causes of chronic diarrhoea. Though there may be several reasons or causes, there exist some specific conditions like Chronic Diarrhoea of Infancy, Bile Acid Diarrhoea, Functional Diarrhoea, and other common conditions:

Chronic Diarrhoea of Infancy (Chronic Diarrhoea in Infants)

Chronic diarrhoea of infancy refers to persistent and chronic loose stools in infants under two years of age.

Causes:

  • Infections: Viral infections like rotavirus or bacterial infections can cause both acute and chronic diarrhoea in infants.
  • Food Allergies/Intolerances: Allergies to breast milk, formula, or certain foods can cause chronic diarrhoea.
  • Digestive Disorders: Issues like gastroenteritis, malabsorption syndromes, or congenital digestive abnormalities may lead to chronic diarrhoea in infants.

Symptoms:

  • Frequent watery stools.
  • Poor weight gain and growth.
  • Irritability and discomfort.
  • Signs like dry mouth, sunken eyes, or reduced urine output indicate dehydration.

Bile Acid Diarrhoea

Bile acid diarrhoea (BAD) is a condition where too much bile acid in the colon causes chronic loose stools.

Mechanism

  • Bile acids help digest fats. Too much bile acid in the colon causes water to build up. This irritates the intestines and leads to chronic diarrhoea.

Causes:

  • Malabsorption: Conditions that interfere with bile acid absorption, such as Crohn’s disease or ileal resection.
  • Primary Bile Acid Malabsorption (PBAM): A genetic condition where the body cannot effectively reabsorb bile acids (acids that are responsible for the absorption of lipids).

Symptoms

  • Chronic, watery diarrhoea.
  • Urgency to have bowel movements.
  • Abdominal discomfort and cramping.
  • Excessive gas and bloating.

Functional Diarrhoea

Chronic loose stools characterise functional diarrhoea without an identified structural or organic cause. It is often related to irritable bowel syndrome (IBS).

Causes

  • Functional diarrhoea is a diagnosis of exclusion, meaning it is diagnosed when no structural or organic cause is found.
  • It is often linked to stress, anxiety, and changes in gut movement and sensitivity.

Symptoms

  • Loose stools with no clear cause. 
  • Abdominal pain or discomfort. 
  • A feeling of not fully emptying the bowels. 
  • Symptoms may worsen with stress or certain foods.

Relation to Chronic Bowel Issues: Functional diarrhoea doesn’t have an underlying disease or inflammation, but it is linked to changes in bowel movement and sensitivity. It’s a type of functional gastrointestinal disorder that can cause ongoing bowel problems.

1. Irritable Bowel Syndrome (IBS)

Irritable Bowel Syndrome is a common digestive disorder. It primarily affects your large intestine. It causes symptoms like abdominal pain, bloating, and so on. It also causes changes in bowel habits, including diarrhoea, constipation, or both.

Causes:

The exact cause is unclear, but it’s related to the movement of your intestines, increased pain sensations by your internal organs, and psychosocial factors.

Symptoms:

Chronic abdominal pain or discomfort, altered bowel habits (diarrhoea, constipation, or both), and abdominal bloating.

2. Inflammatory Bowel Disease (IBD) (e.g., Crohn’s disease and ulcerative colitis):

IBD causes long-term inflammation in your digestive tract. The two main types are Crohn’s disease and ulcerative colitis, both of which affect your GI tract.

Causes: 

Immune system problems can cause ongoing inflammation in your digestive tract.

Symptoms:

You may have chronic diarrhoea, sometimes with blood or mucus, along with stomach pain, weight loss, and fatigue.

3. Food Intolerance (e.g., lactose intolerance, fructose malabsorption):

Food intolerance happens when your digestive system can’t absorb certain food components. It is mainly a digestive issue. Common examples include lactose intolerance, where the body lacks the enzyme needed to digest lactose (found in dairy products).

Causes:

Inability to digest or absorb specific food components.

Symptoms:

Diarrhoea, abdominal pain, bloating, and gas typically occur after consuming trigger foods.

Recognising Underlying Conditions

Identifying Underlying Conditions: Continuous loose stools can result from a variety of issues. It is important to find the accurate cause to ensure effective management.

Avoiding Complications: Prolonged diarrhoea can lead to dehydration, imbalances in electrolytes, malnutrition, and other complications. Quick action and treatment can help you lower these risks.

Effects on Quality of Life: Persistent loose stools can significantly influence a person’s quality of life. They can lead to discomfort, limitations in social engagements, and heightened anxiety. Proper treatment can improve overall well-being and everyday functioning.

Healthcare professionals use various tests to find out what’s causing persistent loose stools. Some frequently used diagnostic techniques include: 

1. Patient Medical History 

2. Physical Assessment 

3. Stool Testing 

4. Blood Analysis 

5. Imaging Tests 

6. Endoscopic Procedures and Biopsies 

7. Breath Testing 

8. Hormonal and Genetic Assessments, among others. 

The doctor chooses the tests depending on their experience and the patient’s symptoms and medical history.

Addressing Chronic Loose Stools 

The treatment for chronic loose stools depends on what’s causing them. It can vary from person to person. Here is general advice on handling chronic loose stools based on the recognised underlying condition:

1. Medical Treatment

  • Infections: If an infection is the cause, antibiotics or antiparasitic drugs may be prescribed for treatment.
  • Bile Acid Diarrhoea: To manage excess bile acids and alleviate diarrhoea, bile acid sequestrants may be recommended.
  • Inflammatory Bowel Disease (IBD): Depending on the severity of the condition, treatment might include anti-inflammatory drugs such as corticosteroids and immunomodulators.
  • Food Intolerances: Managing these intolerances requires avoiding foods that cause reactions. Enzyme supplements, like lactase for lactose intolerance, may also be prescribed.
  • Irritable Bowel Syndrome (IBS): Managing IBS might involve the use of antispasmodics, modifications to one’s diet, and lifestyle changes. Medications prescribed for particular IBS symptoms may be advised in some cases.
  • Functional Diarrhoea: Treatment often emphasises the significance of managing stress and making dietary adjustments, such as incorporating high-fibre or low-FODMAP foods. In some cases, medications may be prescribed to alleviate the symptoms.
  • Alternative Conditions: Treatment will be tailored to the particular condition identified. These include managing malabsorption in celiac disease or tackling thyroid-related problems.

2. Dietary Modifications 

  • Stay Hydrated: Ongoing diarrhoea can result in dehydration. It’s essential to drink plenty of fluids, such as water and oral rehydration solutions. 
  • Balanced Diet: Focus on a well-rounded diet consisting of easily digestible foods. Steer clear of consuming too many high-fibre or greasy items that might worsen symptoms. 
  • Food Diary: Maintain a journal to track dietary triggers and identify foods that may exacerbate symptoms. 
  • Fibre: Adjusting dietary fibre intake may be advised based on the specific condition. For instance, individuals with IBS might find soluble fibre helpful, while those with particular types of IBD may need to restrict fibre intake.
  • Low-FODMAP Diet: This dietary plan involves removing certain sugars that can cause significant digestive problems. The FODMAP diet is designed for individuals dealing with irritable bowel syndrome (IBS) or small intestinal bacterial overgrowth (SIBO). People can figure out which foods cause discomfort and which ones help relieve their symptoms by avoiding these problematic sugars. The goal is to find the right balance and restore one’s health.
  • Gluten-Free Diet: For individuals with celiac disease, adhering to a gluten-free diet is essential for managing symptoms.
  • Lactose-Free Diet: Those with lactose intolerance should avoid dairy products or use lactase supplements when consuming lactose-containing foods.

3. Changes in Lifestyle 

  • Managing Stress: Stress can increase gastrointestinal issues. Utilising relaxation techniques, mindfulness practices, or therapy can be good for controlling stress. 
  • Consistent Exercise: Engaging in regular physical activity can foster healthy digestion and help alleviate discomfort. 
  • Regular Meal Timing: Consuming food at consistent intervals can aid in stabilising bowel movements. 
  • Smaller, More Frequent Meals: Instead of having large meals, opting for smaller, more frequent portions can lessen the burden on the digestive system. 
  • Sufficient Sleep: It’s important to prioritise adequate rest, as sleep plays a significant role in gut health. 

Collaborating closely with a healthcare professional or gastroenterologist is essential to identify the best management strategy for your particular condition.

When to Seek Medical Help

People experiencing ongoing loose stools should reach out to a healthcare professional in these situations: 

1. When Your Symptoms Worsen

If you see that your chronic loose stools are occurring more frequently, it’s wise to seek assistance from a healthcare professional. This could suggest a worsening underlying condition or complications that need medical assessment and treatment. 

2. Blood or Mucus Appears in Stool 

Discovering blood or mucus in your stool is a troubling symptom that necessitates prompt medical attention. Blood-stained stool may point to several serious conditions, such as gastrointestinal bleeding, inflammatory bowel disease (IBD), or colorectal cancer. Mucus in the stool can also signal underlying gastrointestinal problems.

3. Severe Abdominal Pain

If you have diarrhoea with severe stomach pain, see a doctor. Severe pain could be a sign of conditions like appendicitis, diverticulitis, or problems from past digestive issues, which may need surgery or special care.

4. Diarrhoea with Fever

If you have diarrhoea and a fever, it could be a sign of infection or inflammation. Conditions like gastroenteritis or colitis can cause fever. It is good to see a doctor if the fever doesn’t go away, so they can find the cause and give the right treatment.

5. Sudden Weight Loss

Having loose stools that don’t go away and losing weight for no reason could be a sign that something is wrong with your health. It might be connected to conditions like hyperthyroidism, trouble absorbing food, or even cancer. It’s really important to visit your doctor to get to the bottom of it.

6. Signs of Dehydration 

Chronic diarrhoea can result in dehydration, which can be serious if not treated promptly. Look out for symptoms like intense thirst, a dry mouth, dark-coloured urine, dizziness, fatigue, and eyes that appear sunken.

7. Persistent Symptoms for an Extended Period 

When you’ve been experiencing loose stools for more than a month without feeling any better, it’s smart to consult a healthcare provider. Getting an early diagnosis and treatment can help you prevent further issues and boost your overall health.

Conclusion

Chronic loose stools are not just about managing the symptoms. But understanding what’s causing them in the first place. We want to empower you to take charge of your health. If you are dealing with persistent loose stools, don’t hesitate to act. You can talk with your medical professionals about your concerns.

Keep in mind that you and your doctor work together to maintain your health. You can identify the underlying causes of your intestinal problems. This would help you to embark on a journey toward improved digestive well-being. It can be accomplished by cooperating and obtaining medical advice. You must take action for your well-being!

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Dr J S S Dev

Dr. J S S Dev is a passionate Ayurveda practitioner dedicated to promoting a holistic approach to health and well-being. With a profound understanding of Ayurvedic principles, he focuses on the power of prevention through ancient wisdom. Through insightful teachings and personalised guidance, he empowers individuals to embrace Ayurveda as a way of life, enabling them to proactively prevent diseases and cultivate a path to optimal health. With a firm belief in the body's innate capacity to heal, Dr. Dev is committed to helping people lead enriched lives by harmonising the mind, body, and spirit using the timeless principles of Ayurveda.