The sensation or perception of pain, particularly in response to cold or discomfort; related to pain sensation.
From Greek 'algos' (pain) + 'aesthesis' (sensation/perception). The -sis ending indicates a condition or state of being.
Algaesthesis and algaesthesia are almost the same word with slightly different Greek endings—it's like scientists couldn't decide which version sounded more medical, so both survived!
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