Fever dreams are vivid, often bizarre hallucinations that may occur when someone has a high fever.
The increase in body temperature during a fever can temporarily affect the brain’s normal functioning, leading to intense and surreal perceptions.
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While dreams can happen during any sleep stage, most vivid dreams occur during rapid eye movement (REM) sleep. Fever is believed to disrupt REM sleep, resulting in vivid dreams.
These dreams may consist of distorted images, strange sensations, or fragmented thoughts, and can be very disorienting.
Fever dreams are typically temporary and not harmful, but they can cause anxiety. Ideally, the dreams should diminish once the fever is under control, typically with the use of medications like paracetamol.
This article is a response to the question (asked by Ben Middleton via email): “What is a fever dream?”'.
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