The sensation or perception of cold; heightened sensitivity to cold temperatures.
From Greek 'kryos' (cold) combined with 'aesthesis' (sensation or perception). This medical/neurological term emerged in the 19th century to describe abnormal cold sensations and responses.
People with cryesthesia experience cold sensations so intensely that even room temperature feels freezing—it's the opposite of heat-blindness, and researchers think some cases involve the brain misinterpreting temperature signals!
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