Failure to Thrive isn’t a single disease — it’s a clinical sign that a child isn’t growing as expected. Think of it as the body’s “red flag” saying: something’s wrong — I’m not getting what I need to grow.
📖 1. Definition
What is FTT?
Failure to thrive (FTT) refers to poor physical growth in a child, usually under 5 years, evidenced by:
- Weight below the 3rd percentile (or < –2 SD) for age and sex, or
- Crossing two major percentile lines downward on a growth chart.
📊 In simpler terms: the child is not gaining weight or even losing weight, while peers are growing normally.
🔍 2. Types of FTT
| Type | Description | Typical Example |
|---|---|---|
| Organic | Due to identifiable medical cause | Heart disease, malabsorption, chronic infection |
| Non-organic | Due to environmental, psychosocial, or feeding issues | Neglect, poor feeding technique, poverty |
| Mixed | Both medical and psychosocial factors combine | Chronic illness + poor caregiver support |
💡 Exam tip: Always think of non-organic causes first in a child with otherwise normal physical exam — they’re more common!
🧠 3. Causes (High-Yield Categories)
Mnemonic: “I GROW SLOW”
| Letter | Meaning | Examples |
|---|---|---|
| I | Inadequate intake | Poor breastfeeding, wrong formula, neglect |
| G | Gastrointestinal disorders | Celiac disease, chronic diarrhea, malabsorption |
| R | Recurrent infections | TB, HIV, UTIs, otitis media |
| O | Oral problems | Cleft palate, painful mouth ulcers |
| W | Wrong feeding practices | Diluted formula, early weaning, inappropriate diet |
| S | Systemic disease | CHD, renal disease, thyroid disorders |
| L | Low socioeconomic/psychological factors | Poverty, parental depression |
| O | Overmetabolic demand | Chronic illness, congenital heart disease |
| W | Weak parent-child interaction | Neglect, lack of stimulation |
🏥 4. Clinical Features
Signs and Symptoms
- Poor weight gain (earliest sign)
- Delayed milestones
- Irritability, apathy
- Thin hair, muscle wasting, loose skin folds
- Signs of vitamin deficiency (pallor, rickets, etc.)
- In severe cases: hypothermia, bradycardia, or developmental regression
🩺 Exam clue: Weight falters first → then height → then head circumference (HC usually spared until severe malnutrition).
🔍 5. Assessment Approach
Evaluating FTT
1. History
- Detailed feeding history (type, frequency, quantity).
- Diet recall (what exactly the child eats in 24 hours).
- Medical history: infections, chronic illnesses.
- Social history: family size, caregiver availability, emotional environment.
2. Physical Examination
- Growth parameters (weight, height, HC).
- Look for signs of malnutrition or chronic illness.
- Assess developmental milestones.
3. Investigations (as indicated)
- CBC, ESR
- Urinalysis
- Stool for parasites/fat
- HIV, TB screen
- Thyroid and celiac tests (if suspected)
🧠 Trick: Don’t over-investigate too soon. In mild FTT, observation and nutritional support often tell the story.
🛠️ 6. Management Principles
Treating FTT
- 1. Treat the cause. Medical conditions → treat or refer. Feeding problems → teach correct technique.
- 2. Nutritional rehabilitation. Provide catch-up nutrition: ~150% of normal calorie needs. Encourage frequent, small meals; involve a dietitian.
- 3. Environmental improvement. Supportive parenting, psychosocial counseling, poverty alleviation.
- 4. Monitor progress. Regular weight checks every 1–2 weeks until stable. Use growth chart to confirm upward trajectory.
⚠️ 7. Complications (If Untreated)
- Stunted growth and short adult stature
- Recurrent infections (weakened immunity)
- Developmental delay
- Learning difficulties and poor school performance
- In extreme cases — death
🔑 8. Key Takeaways
- FTT = “Faltering growth”, not just thinness.
- Always look at the growth trend, not one measurement.
- Non-organic causes are most common; don’t overlook social factors.
- Early detection and intervention lead to catch-up growth and normal development.
🧠 Quick recall line: “When growth fails, look at food, family, and function — in that order.”