'From fever to freeze: documenting paracetamol-induced hypothermia in a child'

Lalit Takia1, Varsha Mishra2, Poonam Godhwal3

  • 1Pediatrics, National Cancer Institute, All India Institute of Medical Sciences, New Delhi, India.

BMJ Case Reports
|December 23, 2025
PubMed

Insights

A rare adverse effect of paracetamol (acetaminophen) in children is paradoxical hypothermia. This case report details a child experiencing hypothermia after standard doses, highlighting conservative management and lower dosing as effective strategies.

Area of Science:

  • Pediatrics
  • Pharmacology
  • Clinical Toxicology

Background:

  • Paracetamol (acetaminophen) is a widely used antipyretic in pediatric populations.
  • While generally safe, rare adverse effects like paradoxical hypothermia can occur.
  • Understanding these rare reactions is crucial for patient safety.

Purpose of the Study:

  • To report a case of paradoxical hypothermia in a child following standard-dose paracetamol administration.
  • To emphasize the importance of recognizing rare adverse drug reactions.
  • To suggest potential management strategies for such events.

Main Methods:

  • A case report of a pediatric patient experiencing adverse effects after paracetamol intake.
  • Clinical monitoring and investigation to rule out other causes of hypothermia.
  • Observation of patient response to dose adjustments.

Main Results:

  • The child developed significant hypothermia after receiving standard oral doses of paracetamol.
  • No alternative causes for the hypothermia were identified.
  • The child tolerated lower doses of paracetamol without recurrence of hypothermia.

Conclusions:

  • Paradoxical hypothermia is a rare but possible adverse effect of paracetamol in children.
  • Conservative management and cautious re-administration with lower doses may be effective.
  • This case highlights the need for vigilance regarding uncommon drug reactions.

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