the.com/hot flash

Your thermostat gets a vote now, and it always votes lava.

means A sudden, intense wave of body heat, often with sweating and flushed skin, caused by hormonal shifts (most commonly during menopause).

from Straightforward compound English, not borrowed from elsewhere — 'hot' plus 'flash,' the latter in its sense of a brief, sudden burst, like a flash of light or a flash flood. The term rose in medical and everyday use alongside the 20th century's growing frankness about menopause, naming a sensation women had endured and described informally for centuries but which medicine only gradually began to study and name with any precision.

actual cause
brain's temperature sensor misfires, thinks you're overheating
duration
usually under five minutes, feels like forty
timeline
can persist for over a decade, not just menopause itself
triggers
caffeine, alcohol, stress, spicy food, existing
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