PMT is short for premenstrual tension. It names the same unpleasant body feelings and mood changes that many women have before their period starts.

PMT is short forPMT是...的縮寫 premenstrual tensionpremenstrual tension（經前緊張）。It names它指的就是 the same unpleasant body feelings and mood changes那些不舒服的身體感覺和情緒變化 that many women have很多女性會有的 before their period starts在月經來之前。

This is the name you will hear most in British English; American English usually says PMS instead. Doctors, magazines, and everyday talk all use it in the UK.

This is the name you will hear most這是你最常聽到的說法 in British English在英式英文裡; American English usually says PMS instead美式英文通常改說PMS。Doctors, magazines, and everyday talk all use it醫生、雜誌和日常說話都會用這個字 in the UK在英國。

Tension here means strain in the body and in the feelings, not only 'being tense'. Like PMS, it is a real pattern for many people, and it is unkind to use the letters as a joke when someone is upset.

Tension here這裡的tension means strain in the body and in the feelings指的是身體和情緒上的緊繃, not only 'being tense'不只是「感覺緊張」而已。Like PMS跟PMS一樣, it is a real pattern for many people這對很多人來說是真實存在的規律, and而且 when someone is upset在別人不舒服的時候 to use the letters as a joke拿這幾個字母來開玩笑 it is unkind是不太厚道的。

In other contexts the same three letters can mean other things (including a payment), so the sentence has to tell you which PMT you are looking at.

In other contexts在其他情境裡, the same three letters can mean other things同樣這三個字母可能代表別的東西 (including a payment)（包括payment，付款）, so the sentence has to tell you所以要看句子才知道 which PMT you are looking at你面對的是哪一個PMT。