Diarrhoea in Children (Infantile Diarrhoea): Causes, Symptoms, Dehydration & Treatment

Diarrhoea in children showing oral rehydration solution and dehydration care
Diarrhoea in Children – ORS, Dehydration Signs and Treatment

Introduction

Diarrhoea in children is a very common health problem. Most children experience loose motions several times during infancy and early childhood. In many cases, diarrhoea improves within a few days. However, severe diarrhoea can become dangerous because it causes dehydration.

Diarrhoea means passing loose or watery stools many times a day. The stools may look green, watery, foul-smelling, or mixed with mucus. Sometimes, blood may also appear in the stool, especially in dysentery.

Moreover, diarrhoea remains one of the major causes of illness in children under five years of age, especially in developing countries. Fortunately, proper hydration, continued feeding, and early treatment help most children recover completely.


What Is Diarrhoea?

Diarrhoea is a condition in which a child passes loose or watery stools frequently. Usually, children pass stools more than four times a day during diarrhoea.

It is important to understand that diarrhoea is not a disease itself. Instead, it is a symptom of another problem, such as infection or digestive upset.

Diarrhoea may be:

  • Acute – lasts less than 14 days
  • Persistent – lasts 14 to 28 days
  • Chronic – lasts more than 4 weeks

Causes of Diarrhoea in Children

1. Infections

Infections are the most common cause of diarrhoea in children.

Common germs include:

Viruses

  • Rotavirus
  • Norovirus

Bacteria

  • E. coli
  • Shigella
  • Salmonella

Parasites

  • Giardia lamblia
  • Entamoeba histolytica

These infections usually spread through dirty hands, contaminated water, or unhygienic food.


2. Other Childhood Illnesses

Sometimes, diarrhoea happens along with other illnesses, such as:

  • Ear infection
  • Throat infection
  • Respiratory infection
  • Teething
  • Severe infections like meningitis

In addition, increased saliva during teething may mildly upset digestion.


3. Dietary Causes

Certain food-related problems may also cause diarrhoea.

These include:

  • Too much sugar
  • Excess fatty foods
  • Lactose intolerance
  • Improper formula feeding
  • Unsuitable foods for age

Therefore, proper feeding habits are very important for children.

Also read this post :- Perinatal Asphyxia (Birth Asphyxia): Causes, Symptoms, Treatment, and Prevention


Symptoms of Diarrhoea

Mild Diarrhoea

Common symptoms include:

  • Mild fever
  • Occasional vomiting
  • Irritability
  • Restlessness
  • Poor sleep
  • 2–10 loose stools daily
  • Mild dehydration

In mild cases, the child usually remains active.


Severe Diarrhoea

Severe diarrhoea may cause:

  • Frequent watery stools
  • High fever
  • Loss of appetite
  • Abdominal cramps
  • Green stools
  • Mucus or blood in stool
  • Weakness
  • Weight loss

Furthermore, severe diarrhoea can quickly lead to dehydration.


Dehydration: The Most Dangerous Problem

Dehydration happens when the body loses too much water and salts. Young children are more vulnerable because their bodies contain less fluid reserve.

Therefore, parents should recognize dehydration early.


Common Signs of Dehydration

Watch for these warning signs:

  • Dry mouth and lips
  • Sunken eyes
  • Reduced urine
  • No tears while crying
  • Weakness
  • Cold hands and feet
  • Fast heartbeat
  • Sunken soft spot on the head in infants

In severe cases, the child may become unconscious.


Types of Dehydration

1. Mild Dehydration

Symptoms include:

  • Increased thirst
  • Slight weakness
  • Irritability

However, the child usually stays alert.


2. Moderate Dehydration

Common signs include:

  • Dry tongue
  • Sunken eyes
  • Reduced urination
  • Weak skin elasticity
  • Sunken fontanelle

At this stage, medical advice is important.


3. Severe Dehydration

This is a medical emergency.

Symptoms include:

  • Extreme weakness
  • Very little urine
  • Fast weak pulse
  • Cold hands and feet
  • Drowsiness
  • Unconsciousness

Immediate hospital treatment is necessary.

Also read this post :- A Baby’s First Breath: Why It Is the Most Precious Moment of Life


Common Myths About Diarrhoea

Many parents stop food, milk, or water during diarrhoea. However, this practice is harmful.

✅ Children should continue feeding and drinking fluids during diarrhoea.

Stopping food may weaken the child and delay recovery.


Treatment of Diarrhoea in Children

Rehydration Is Most Important

The biggest danger in diarrhoea is dehydration, not the loose stools themselves.

Therefore, replacing lost fluids quickly is essential.


Oral Rehydration Solution (ORS)

ORS is a mixture of water, glucose, and important salts.

It helps by:

  • Replacing lost fluids
  • Preventing dehydration
  • Restoring body salts

However, ORS does not stop diarrhoea directly.


WHO ORS Formula

WHO-recommended ORS contains:

  • Sodium
  • Potassium
  • Chloride
  • Glucose

This formula works especially well in hot countries like India.


Homemade ORS

If ORS packets are unavailable, parents can prepare ORS at home.

Mix:

  • 1 teaspoon sugar
  • A pinch of salt
  • A few drops of lemon
  • 100 ml clean water

⚠️ Do not add too much salt or sugar.


How Much ORS Should Be Given?

  • Mild diarrhoea: 50 ml per kg body weight
  • Moderate dehydration: 75–100 ml per kg

Give small sips frequently. Continue ORS even if diarrhoea continues.


Feeding During Diarrhoea

Foods That Help

The following foods are usually safe:

  • Breast milk
  • Diluted milk
  • Curd (yogurt)
  • Banana
  • Apple
  • Rice water
  • Lentil water
  • Coconut water

These foods help maintain strength and energy.


Foods to Avoid

Avoid:

  • Excess sugary foods
  • Oily foods
  • Aerated drinks
  • Very spicy foods

These foods may worsen diarrhoea.


When Should a Child Go to the Hospital?

Seek medical care immediately if:

  • Severe dehydration develops
  • The child cannot drink fluids
  • Vomiting becomes persistent
  • Blood appears in stool
  • High fever occurs
  • The child becomes weak or unconscious
  • Diarrhoea lasts more than 3–5 days

In severe cases, doctors may give intravenous (IV) fluids.


Role of Medicines

Most mild diarrhoea cases do not need medicines.

However:

  • Doctors may prescribe antibiotics for bacterial infections
  • Zinc supplements may help recovery
  • Stool tests may identify the cause

⚠️ Avoid self-medication and unnecessary antibiotics.


Prevention of Diarrhoea in Children

You can reduce the risk of diarrhoea by following these steps:

  • Wash hands regularly
  • Use clean drinking water
  • Maintain food hygiene
  • Continue breastfeeding
  • Keep feeding bottles clean
  • Give vaccinations on time

In addition, the rotavirus vaccine helps protect children from severe diarrhoea.

Also read this post :- Causes and treatment of bedwetting in children at night.


Conclusion

Diarrhoea in children is common, but dehydration makes it dangerous. Therefore, early fluid replacement and continued feeding are extremely important.

ORS, proper nutrition, and timely medical care can prevent serious complications. Parents should stay calm, watch for warning signs, and seek medical help when needed.

With proper care, most children recover quickly and safely.


Frequently Asked Questions (FAQs)

1. What is diarrhoea in children?

Diarrhoea is a condition in which a child passes loose or watery stools frequently.

2. What causes diarrhoea in children?

Common causes include infections, poor hygiene, contaminated food or water, and dietary problems.

3. Why is diarrhoea dangerous?

It can cause dehydration, which may become life-threatening if not treated early.

4. What are the signs of dehydration?

Dry mouth, sunken eyes, reduced urine, weakness, and cold hands or feet are common signs.

5. Should feeding stop during diarrhoea?

No. Breastfeeding and light foods should continue during diarrhoea.

6. What is ORS?

ORS is a solution that replaces lost water and salts in the body.

7. Can homemade ORS be used?

Yes. A simple homemade ORS can help when packets are unavailable.

8. When should I see a doctor?

Seek medical help if the child has severe dehydration, blood in stool, high fever, or persistent vomiting.

9. Are antibiotics always needed?

No. Most diarrhoea cases are viral and improve without antibiotics.

10. How can diarrhoea be prevented?

Good hygiene, clean water, breastfeeding, and vaccination help prevent diarrhoea.

Medical Disclaimer :

This article is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified pediatrician for proper medical care.

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