Fever & Rashes in Paediatrics

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Last Updated on August 19, 2026

Table of Contents

    Triaging in ED

    Primary triage

    ?
    • The child is in / shock / life-threatening condition?
    or non-infectious condition?

    =====
    💡 One the most important things at triage level is to determine whether the child is stable

    Differential Diagnoses

    Some common causes:

    Infectious:
    • Hand, foot and mouth disease
    • Measles
    • Herpes simplex virus infection
    • Chikungunya
    • Chickenpox

    Non-infectious:
    • Meningitis
    • Stevens-Johnson syndrome /
    • Dengue
    • Kawasaki disease

    History Taking

    Rash

    of rash in relation to fever
    • Type of rash
    • Distribution

    Relevant history

    • Sick contact?
    • Allergy history
    • Recent history of taking

    Physical Examination

    Assessment of hydration status:

    Parameter

    No / Mild (≤ 5%)

    Moderate (5 - 10%)

    Severe (≥10%)

    Shock

    General appearance

    Well

    Unwell

    Unwell / Deteriorating

    Unwell / Deteriorating

    Consciousness

    Alert & responsive

    Restless / irritable

    Lethargic / unconscious

    Lethargic / unconscious

    Sunken eyes

    Absent

    Present

    Present

    Present - grossly sunken eyes

    Skin turgor

    Normal (i.e. brisk // immediate)

    Reduced (≤2 seconds)

    Reduced (>2 seconds)

    Reduced (>2 seconds)

    Offer Fluid

    Drinks normally

    Drinks eagerly

    Unable to drink / Drinks poorly

    Unable to drink / Drinks poorly

    Notes
    1. Adults same as children, if they are unwell, the oral intake will be poor and drinking poorly

    Reference:
    1. Paediatrics Protocol 4th ED, 2018

    Other parameters used for hydration assessment:
    • Color of skin
    • CRT
    • Temperature of peripheries – warm / cold
    • Pulse volume
    • Pulse rate — tachycardia / normal heart rate

    Any signs of shock?
    • Compensated shock — + Tachycardia + Normal BP

    • Decompensated shock — + Tachycardia + Hypotension

    References / Further Reading

    1. Day of appearance of rash in febrile patients [link]

    Take Home Message

    1. At ED, it’s important to determine if the child is stable and whether resuscitation is required
    2. Children unlike adults, can deteriorate very fast
    3. Always remember to ask regarding oral intake and diapers change frequency to evaluate hydration status

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