The great majority of febrile children are well. The skill is finding the few who are not.
Paediatric infection is a numbers problem before it is a diagnostic one. Children get frequent, self-limiting viral illnesses, and a clinician who investigates every fever will exhaust the service without helping anyone. But a small number of those children have meningococcal disease, severe pneumonia or dehydrating diarrhoea, and they can deteriorate within hours.
So the chapter is built around triage rather than diagnosis: which features separate the child who needs nothing from the child who needs treating now. Those features turn out to be remarkably consistent across conditions — how the child looks, how they behave, whether they are feeding, and how they are breathing.
🩺 Where this lives: Pneumonia and diarrhoea remain among the leading causes of death in children under five worldwide, and the interventions that address them are among the cheapest in medicine. Oral rehydration solution, zinc, counting a respiratory rate, and a functioning immunisation programme prevent more childhood deaths than any hospital technology. This is one of the few areas where knowing simple things thoroughly, and applying them early, genuinely changes mortality at a population scale.
💡 A note on numbers and schedules. This chapter gives no doses — paediatric dosing is weight-based. It also gives no immunisation schedule. The Nepal national schedule is set by the national immunisation programme and is revised over time, so ages and intervals must come from the current official schedule rather than from a textbook or from memory. What is taught here is the reasoning: why coverage matters, when a vaccine should be deferred, and — just as important — when it should not.
Assessing the febrile child
The most useful correction to make early is this: the height of the fever is a poor guide to how ill a child is. A child with a high temperature who is alert, drinking and playing between fevers is usually fine; a child with a modest temperature who is drowsy, floppy and refusing feeds is not. Appearance and behaviour outperform the thermometer, and "not feeding" is one of the most reliable danger signs in a young child — the same red flag as in the newborn.
THE ONE THAT CANNOT WAIT
FEVER + NON-BLANCHING RASH = MENINGOCOCCAL DISEASE
until proven otherwise.
Give antibiotics IMMEDIATELY. Do not wait for:
- a lumbar puncture
- blood results
- transfer to another unit
Meningococcal sepsis can progress from a well-looking
child to shock within hours, and delay in the first dose
of antibiotic is the factor most consistently associated
with poor outcome.
The rash is a LATE sign in some children — so a very unwell
child with fever and no rash is not reassured by its
absence.
TEST: press a glass against the rash. A rash that does NOT
fade under pressure is non-blanching. Any doubt is treated
as if it does not blanch.
Also remember that young infants with meningitis often lack
neck stiffness entirely. They present with poor feeding,
lethargy, irritability, a bulging fontanelle or apnoea.
The rash illnesses
💡 Exam angle: the rash illnesses are distinguished by their accompaniments, not by the rash alone. Measles comes with cough, coryza and conjunctivitis, and Koplik spots precede the rash. Chickenpox shows vesicles in crops, so lesions at different stages coexist. Rubella is mild but matters because of congenital rubella syndrome if a pregnant woman is infected. Scarlet fever brings a strawberry tongue and is bacterial. And the meningococcal rash is the one that does not blanch.
Immunisation
TRUE AND FALSE CONTRAINDICATIONS
A vaccine is genuinely deferred or avoided for:
SEVERE ALLERGIC REACTION to a previous dose or a vaccine
component
LIVE VACCINES in significant immunosuppression
LIVE VACCINES in pregnancy, as a general principle
ACUTE SEVERE FEBRILE ILLNESS — defer briefly, because a
new illness would be hard to attribute, not because
the vaccine is unsafe
These are NOT reasons to withhold a vaccine, and each of
them is a common cause of missed immunisation:
A minor illness such as a cold, WITHOUT fever
Being on antibiotics
Prematurity — preterm infants are vaccinated according
to their ACTUAL age, not a corrected one, and they
need the protection more than most
A family history of adverse reactions
Breastfeeding
Stable neurological conditions
Malnutrition
MISSED DOSES: a delayed schedule is resumed, not restarted.
There is no need to begin the course again.
Why this matters: most under-vaccination is not refusal. It
is a child sent away from a clinic for a reason that was
never a contraindication, who then does not come back.
Diarrhoea
Oral rehydration solution is one of the most important therapeutic advances of the twentieth century, and the reason it works is worth understanding rather than memorising. Sodium absorption in the small intestine is coupled to glucose, and that mechanism continues to function even when the gut is inflamed and secreting fluid. Adding glucose to salt water therefore drives absorption in a gut that would otherwise only lose fluid. Zinc reduces the duration and severity of the episode, and feeding continues throughout — starving a child with diarrhoea prolongs recovery and worsens nutrition.
Pneumonia
💡 Exam angle: counting the respiratory rate is emphasised because it is the sign that survives being far from a hospital. It needs no equipment and can be taught to a community health worker, which is why it anchors integrated case management. Chest indrawing marks severe pneumonia and means referral, not home treatment. Note also how much childhood pneumonia is vaccine-preventable — pneumococcal, Hib and measles vaccination all reduce it.
Clinical reasoning: four presentations
🔍 Case 1 — a high fever and a happy child
PresentationA 3-year-old has had a temperature of 39.5°C for a day. She is alert, drinking, playing between fevers, has wet nappies and a blanching rash. The parents want antibiotics because the fever is high.
Key questionHow does the child look and behave, not how high is the number?
ReasoningHeight of fever correlates poorly with serious illness. Alertness, drinking, playing and normal urine output are all reassuring, and the rash blanches.
AnswerNo antibiotics. Explain the reasoning, give clear safety-netting advice about what would change things — drowsiness, poor feeding, a non-blanching rash, breathing difficulty — and ensure the parents know how to seek help.
🔍 Case 2 — spots that do not fade
PresentationA 5-year-old is febrile, drowsy and mottled, with a few dark spots on the legs that do not fade under a glass. The plan is to arrange transfer and a lumbar puncture before antibiotics.
TrapCompleting the diagnostic pathway before treating.
ReasoningFever with a non-blanching rash in an unwell child is meningococcal disease until proven otherwise, and delay to the first antibiotic dose is what worsens outcome.
AnswerAntibiotics immediately, then resuscitate and transfer. Investigations follow treatment here — never the reverse.
🔍 Case 3 — sent home from the vaccine clinic
PresentationA 4-month-old born preterm attends for routine immunisation with a mild runny nose, no fever, and is on antibiotics for a skin infection. He is turned away and told to return when fully well.
ErrorThree false contraindications applied at once.
ReasoningA minor illness without fever, current antibiotics and prematurity are all not contraindications. Preterm infants are vaccinated by actual age and benefit particularly. Each missed visit risks a child who does not return.
AnswerVaccinate today per the current national schedule. If any doses have been missed, resume the schedule rather than restarting it.
🔍 Case 4 — diarrhoea and a slow skin pinch
PresentationAn 18-month-old has had watery diarrhoea for two days. He is lethargic, has sunken eyes, is unable to drink, and the skin pinch retracts very slowly. Oral rehydration and an antimotility drug are proposed.
Two errorsUnder-treating the dehydration, and using an antimotility agent.
ReasoningLethargy, inability to drink, sunken eyes and a very slow skin pinch indicate severe dehydration. A child who cannot drink cannot be rehydrated orally, and antimotility drugs are avoided in children.
AnswerIntravenous rehydration per protocol, then oral rehydration as he improves. Give zinc, continue feeding, and avoid routine antibiotics unless there is a specific indication.
Commonly confused
Confusion
The distinction
Why it matters
High fever vs serious illness
Appearance and behaviour predict better
Stops both over- and under-treatment.
Blanching vs non-blanching rash
The glass test
Non-blanching with fever means antibiotics now.
Measles vs rubella
Measles has cough, coryza, conjunctivitis and Koplik spots
Rubella's danger is to a pregnancy, not the child.
Chickenpox vs other rashes
Vesicles in crops at different stages
A distinctive and reliable clue.
Minor illness vs true contraindication
Fever-free minor illness is not a reason to defer
False contraindications cause missed immunisation.
Preterm vs corrected age for vaccines
Vaccinate by ACTUAL age
These infants need protection most.
Some vs severe dehydration
Lethargy and inability to drink
Severe dehydration needs intravenous fluid.
Fast breathing vs chest indrawing
Indrawing marks severe pneumonia
It changes home treatment into referral.
Rapid revision
MUST-KNOW FACTS
1. The HEIGHT of a fever is a poor guide to severity.
2. How the child LOOKS and BEHAVES matters more.
3. NOT FEEDING is a major danger sign in a young child.
4. The younger the child, the lower the threshold to investigate.
5. FEVER + NON-BLANCHING RASH = meningococcal disease until excluded.
6. Give antibiotics IMMEDIATELY — before lumbar puncture or transfer.
7. Absence of a rash does not exclude meningococcal disease.
8. Infants with meningitis often have NO neck stiffness.
9. Infant meningitis: poor feeding, lethargy, bulging fontanelle, apnoea.
10. Measles: cough, coryza, conjunctivitis, then a descending rash.
11. KOPLIK SPOTS precede the measles rash.
12. Chickenpox: itchy vesicles in CROPS, different stages together.
13. Rubella is mild — its danger is CONGENITAL RUBELLA SYNDROME.
14. Scarlet fever: sandpaper rash, STRAWBERRY TONGUE, bacterial.
15. Herd immunity protects those who cannot be vaccinated.
16. More transmissible infections require higher coverage.
17. Measles returns first when coverage falls.
18. Live vaccines: avoid in significant immunosuppression and pregnancy.
19. Minor illness WITHOUT fever is NOT a contraindication.
20. Antibiotics are NOT a contraindication.
21. Prematurity is NOT a contraindication — vaccinate by ACTUAL age.
22. Missed doses: RESUME the schedule, do not restart it.
23. Take schedule ages from the CURRENT national programme.
24. ORS works because sodium absorption is coupled to GLUCOSE.
25. Give ZINC in childhood diarrhoea.
26. CONTINUE FEEDING — do not starve a child with diarrhoea.
27. Avoid antimotility drugs in children.
28. Severe dehydration: lethargy, sunken eyes, unable to drink, very slow skin pinch.
29. Severe dehydration or shock needs INTRAVENOUS fluid.
30. FAST BREATHING is the most useful single sign of pneumonia.
31. CHEST INDRAWING means severe pneumonia — refer.
32. Danger signs: convulsions, lethargy, persistent vomiting, unable to feed.
33. Pneumococcal, Hib and measles vaccines all prevent pneumonia.
💡 Exam angle: two threads dominate. The first is triage — questions give you a febrile child and ask whether to treat, investigate or reassure, and the answer follows appearance and feeding rather than temperature. The second is false contraindications, which are asked more often than real ones, because sending a child away from a vaccine clinic for a cold is a common and consequential error.
Syllabus points
Why fever height is a poor guide to severity
Red flags in the febrile child
Fever with a non-blanching rash
Meningitis in infants without neck stiffness
Distinguishing the rash illnesses
Herd immunity and coverage
True versus false contraindications
Resuming rather than restarting a schedule
Why oral rehydration solution works
Zinc, continued feeding and what to avoid
Recognising severe dehydration
Fast breathing and chest indrawing in pneumonia
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