Paradoxical Undressing
Definition
Removal of clothing in the final phase of hypothermia, driven by central thermoregulatory failure and peripheral vasodilatation producing a subjective sensation of warmth. Documented in 20-50% of hypothermia deaths. May simulate assault at scene examination.
- Phase
- Final stage of hypothermia
- Mechanism
- Central thermoregulatory failure, peripheral vasodilatation
- Reported frequency
- 20-50% of hypothermia deaths
- Investigative risk
- Can simulate assault at scene
Common questions
Why does peripheral vasodilatation cause a dying person to feel warm rather than cold?+
As the core cools further, the muscles controlling peripheral blood vessels lose their ability to keep blood constricted to the core, so warmer blood rushes back to the skin and gives a false sensation of heat, prompting the person to remove clothing shortly before death.
What scene features help distinguish paradoxical undressing from an assault involving removed clothing?+
Investigators look at ambient temperature, the pattern and location of discarded clothing relative to the body, absence of defensive injuries, and toxicology or exposure history consistent with hypothermia, rather than relying on undress alone as an indicator of foul play.
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