Vapours (mental condition)
In archaic usage, the vapours (or vapors) is a mental, psychological, or physical state, such as hysteria, mania, clinical depression, bipolar disorder, lightheadedness, fainting, flush, withdrawal syndrome, mood swings, or PMS in which a sufferer loses mental focus. Ascribed primarily to women and thought to be caused by internal emanations (vapours) from the womb, it was related to the concept of female hysteria.
Source: Wikipedia — Vapours (mental condition) (CC BY-SA 4.0)