also: とうかん
noun
night sweats; sweating during sleep
Refers to excessive sweating while sleeping, often associated with illness or fever.
風邪をひいて寝汗をかいた。
I caught a cold and had night sweats.
寝汗がひどくて、パジャマがびしょびしょになった。
My night sweats were so bad that my pajamas got soaked.