the.com/perimenopause

Puberty's evil twin, except you get wrinkles instead of a growth spurt.

means The hormonal transition phase leading up to menopause, often lasting several years, marked by irregular periods and fluctuating estrogen and progesterone levels.

from Built from Greek 'peri-' (around, surrounding) plus 'menopause' itself, which fuses Greek 'men' (month) and 'pausis' (cessation). So literally: the time hovering around the stopping of the months. The word 'menopause' was coined in medical French ('ménopause') in the early 1800s; 'perimenopause' is the newer, more clinical add-on, formalized as doctors realized the chaos starts well before periods actually stop.

duration
can last up to a decade, not a year
hormones
estrogen swings wilder than teenage years
average onset
starts mid-40s, sometimes late 30s
ends when
officially over after 12 period-free months
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