Things to know about diarrhea

Diarrhea: Causes, Symptoms, Treatment & Prevention

Diarrhea refers to passing loose, watery stools more than three times in a day. It occurs when the digestive system fails to properly absorb water from the food waste in the intestine. Diarrhea can be acute (short-term), persistent, or chronic (long-term) depending on its duration and cause.

 How Diarrhea Happens

When the intestine moves too quickly or cannot absorb nutrients and fluids properly, excess water remains in the stool, making it loose or watery.
This may happen due to:

• Infections

• Food intolerance

• Medications

• Digestive diseases

 Common Causes

Diarrhea is most commonly caused by infections (viral, bacterial, or parasitic), contaminated food or water, and poor hygiene. Other causes include food intolerances (such as lactose intolerance), certain medications (especially antibiotics), digestive disorders like IBS or inflammatory bowel disease, and stress-related gut disturbances.

🔹 Infections

• Viruses: Rotavirus, Norovirus

• Bacteria: E. coli, Salmonella, Shigella, Campylobacter

• Parasites: Giardia, Entamoeba (amoebiasis)

🔹 Diet & Lifestyle causes :

• Contaminated food or water

• Food allergy/intolerance (e.g., lactose intolerance)

• Excess caffeine or alcohol

• Artificial sweeteners like sorbitol or mannitol

🔹 Medical Conditions

1.IBS-D (IBS with diarrhea)

Irregular gut motility

2.IBD (Crohn’s, Ulcerative Colitis)

Inflammation damages absorption

3.Thyroid disorders

Increased bowel movement in hyperthyroidism

4.Pancreatic insufficiency

Poor digestion and nutrient absorption

🔹 Medications

• Antibiotics (destroy gut flora)

• Antacids with magnesium

• Chemotherapy drugs

 Symptoms :

The primary symptom is frequent passage of loose or watery stools. Other symptoms may include abdominal cramps, urgency, bloating, nausea, vomiting, and sometimes fever. In severe cases, signs of dehydration such as dry mouth, dizziness, reduced urine output, and weakness may occur.

• Frequent loose/watery stools

• Abdominal cramps

• Bloating & gas

• Nausea or vomiting

• Urgent need to pass stools

• Fever (sometimes)

• Dehydration (major risk)

 Signs of Dehydration

• Dry mouth

• Dizziness, weakness

• Reduced urination

• Dark yellow urine

• Sunken eyes (in children)

 Diagnosis

Acute diarrhea is usually diagnosed based on clinical history and does not require extensive testing. In persistent or severe cases, stool examination, blood tests, and sometimes imaging may be performed to identify the underlying cause and rule out serious conditions.

Most cases are diagnosed clinically and improve within a few days. Medical tests are required if diarrhea is severe or persistent.

 Tests May Include:

• Stool microscopy / culture

• Routine blood tests (CBC, electrolytes)

• Stool test for parasites

• Food intolerance testing if suspected

• Colonoscopy in chronic or unclear cases

 Treatment & Management

Management focuses on rehydration and correcting electrolyte imbalance, primarily through oral rehydration solutions (ORS). Light, easily digestible foods are recommended. In certain cases, medications such as antidiarrheal agents, probiotics, or antibiotics (if bacterial infection is suspected) may be prescribed.

1️ Rehydration Is Key

The main treatment is fluid and electrolyte replacement.

ORS (Oral Rehydration Solution):

• Sip small amounts frequently

• Prevents dehydration

• Especially important for children & elderly

Homemade ORS (1 liter boiled & cooled water)

• 6 teaspoons sugar

• 1/2 teaspoon salt

2️⃣ Dietary Management

Recommended

Avoid

ORS, coconut water

Raw salads during active diarrhea

Rice, curd, bananas, toast (BRAT diet)

Milk (if lactose sensitive)

Steamed veggies

Caffeine, alcohol

Light soups & khichdi

Spicy/fried foods

3️⃣ Medications

Category

Purpose

Loperamide

Reduces frequency (avoid in bloody diarrhea/fever)

Racecadotril

Anti-secretory, reduces fluid loss

Probiotics

Restores healthy gut bacteria

Antibiotics

Only if bacterial infection confirmed/strong suspicion

⚠️ Avoid self-medication with antibiotics unless advised by a doctor.

 When to See a Doctor

Seek medical help if:

• Diarrhea lasts > 3 days

• High fever

• Blood or mucus in stools

• Signs of dehydration

• Severe abdominal pain

• Following recent travel or contaminated food exposure

• In infants, elderly, or immunocompromised individuals

 Prevention

• Drink clean, treated or boiled water

• Maintain hand hygiene

• Wash fruits and vegetables thoroughly

• Avoid street food in unsafe areas

• Safe food storage and preparation

• Avoid sharing water bottles during infections

Disclaimer:

The information provided on this website is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified physician or other licensed healthcare provider with any questions you may have regarding a medical condition. Do not ignore or delay seeking medical advice because of information you read on this website. The use of any information provided here is solely at your own risk.