also: はいた
noun, noun which may take the genitive case particle 'no'
toothache
Refers to pain in a tooth or teeth. Often used in medical or everyday contexts.
昨夜から歯痛がひどくて眠れなかった。
I couldn't sleep last night because of a bad toothache.
歯痛の原因は虫歯かもしれない。
The cause of the toothache might be a cavity.
Compound of 歯 (tooth) and 痛 (pain). The reading しつう is the standard Sino-Japanese on'yomi; はいた is a rare mixed reading.