What to Do About Diarrhea That Has Lasted 2 Weeks

Diarrhea persisting for more than two weeks is considered chronic. While it can be uncomfortable and disruptive, many causes are treatable once identified. This guide covers what might be behind prolonged diarrhea, practical self-care steps, when to seek medical help, and how doctors diagnose and manage this issue.

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Understanding Chronic Diarrhea

Diarrhea lasting two weeks or longer can come from a variety of sources. Common categories include:

• Infectious Agents
– Parasitic (Giardia, amoebiasis)
– Bacterial (Campylobacter, Clostridioides difficile)
– Viral (rarely after two weeks, but possible in immunocompromised people)

• Inflammatory Conditions
– Inflammatory bowel disease (Crohn’s, ulcerative colitis)
– Microscopic colitis

• Functional Disorders
– Irritable bowel syndrome (IBS) with predominant diarrhea

• Malabsorption Syndromes
– Celiac disease
– Pancreatic insufficiency
– Small intestinal bacterial overgrowth (SIBO)

• Medications and Supplements
– Antibiotics (alter gut flora)
– Magnesium or laxative overuse
– Cancer therapies

• Hormonal and Systemic Causes
– Hyperthyroidism
– Diabetes (autonomic neuropathy)

Identifying the category helps guide testing and treatment.

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When to Be Concerned

Prolonged diarrhea can lead to dehydration, nutrient deficiencies, and complications if serious underlying disease is present. Consider urgent medical attention if you experience:

• Signs of dehydration
– Dizziness or lightheadedness when standing
– Very dark urine or almost no urine output
– Dry mouth, sunken eyes

• Alarming symptoms
– Blood or black (“tarry”) stools
– Severe abdominal pain or cramping
– High fever (over 102°F/38.9°C)
– Unintentional weight loss (more than 5% of body weight)

If any of these occur, speak to a doctor immediately or visit an emergency department.

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Practical Self-Care Steps

While awaiting a formal evaluation, you can take measures to ease symptoms and prevent complications:

1. Rehydrate Safely

• Use oral rehydration solutions (ORS) or electrolyte powders
• Sip clear fluids (water, broth) throughout the day
• Avoid caffeine, alcohol, and sugary drinks that can worsen diarrhea

2. Adjust Your Diet

• Follow a mild diet (BRAT: bananas, rice, applesauce, toast) for a day or two
• Gradually reintroduce lean proteins (chicken, turkey, tofu) and cooked vegetables
• Limit high-fat, spicy, or high-fiber foods until symptoms improve
• Avoid sugar alcohols (sorbitol, mannitol) often found in sugar-free gum and candies

3. Consider Over-the-Counter Medications

• Loperamide (Imodium) to slow gut motility
• Bismuth subsalicylate (Pepto-Bismol) for mild inflammation and microbes
• Follow dosing instructions; avoid if you have bloody stools or high fever

4. Try Probiotics

• Strains like Lactobacillus GG or Saccharomyces boulardii can help restore balance
• Look for products with at least 1–10 billion CFUs per dose
• Continue for one to two weeks to assess benefit

5. Rest and Manage Stress

• Stress can aggravate gut transit time and pain
• Gentle exercise (walking, yoga) may aid digestion
• Practice relaxation techniques: deep breathing, meditation

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When to Seek Professional Evaluation

If diarrhea remains after two weeks or self-care brings no relief, schedule a medical assessment. You might also try a free, online symptom check, using the doctor approved Ubie Symptom Checker for an initial guide to possible causes and next steps.

Your doctor will ask about:

• Onset, pattern, and severity of diarrhea
• Associated symptoms (fever, pain, weight loss)
• Recent travel, antibiotic use, or sick contacts
• Diet changes, new medications, supplements

They may perform:

• Physical exam (abdominal tenderness, signs of dehydration)
• Stool studies (culture, ova and parasites, C. difficile toxin)
• Blood tests (CBC, electrolytes, thyroid function, celiac antibodies)
• Imaging or endoscopy if inflammation or malabsorption is suspected

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Potential Treatments Based on Cause

Once a diagnosis is reached, treatment is tailored accordingly:

• Parasitic Infection (e.g., Giardia)
– Metronidazole or tinidazole course

• Bacterial Overgrowth or Infection
– Short-course antibiotics (rifaximin for SIBO; vancomycin for C. difficile)

• Inflammatory Bowel Disease
– Aminosalicylates, corticosteroids, immunomodulators, or biologics

• Celiac Disease
– Lifelong gluten-free diet

• Irritable Bowel Syndrome
– Dietary modifications (low-FODMAP), anti-diarrheal agents, gut-directed therapy

• Medication-Induced
– Adjust or discontinue the offending agent under medical supervision

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Preventing Future Episodes

After recovery, you can reduce risk of recurrence by:

• Maintaining good hand hygiene, especially before eating or after restroom use
• Drinking treated or boiled water when traveling to areas with unknown water safety
• Eating well-cooked foods and avoiding raw or undercooked meats, seafood, and unpasteurized dairy
• Managing chronic conditions (diabetes, thyroid disease) with regular follow-up
• Reviewing medications and supplements periodically with your healthcare provider

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Key Takeaways

• Diarrhea lasting two weeks or more warrants evaluation for infections, inflammation, malabsorption, or functional disorders.
• Stay hydrated, modify your diet, and consider over-the-counter remedies and probiotics.
• Seek urgent care for dehydration, bloody or black stools, severe pain, fever, or weight loss.
• A doctor’s office visit may include stool and blood tests, imaging, or scopes to pinpoint the cause.
• Treatments range from antibiotics or antiparasitics to dietary changes and specialized medications.

For a quick, personalized assessment, you can do a free, online symptom check, using the doctor approved Ubie Symptom Checker.

Remember, persistent diarrhea isn’t something you have to face alone. If you notice any serious warning signs or if two weeks of self-care haven’t helped, speak to a doctor promptly about your symptoms.