Hot Flashes (Vasomotor Symptoms)

Hot flashes are caused by the hypothalamus — the brain's thermostat — becoming hypersensitive to small temperature fluctuations due to declining estrogen. The hypothalamus misreads a minor temperature signal as overheating and triggers an exaggerated cooling response: blood vessels dilate, skin flushes, sweating begins. It is a real physiological event with a specific neurological mechanism, not a vague symptom of getting older.

HRT — particularly estrogen — is the most effective treatment for vasomotor symptoms and is endorsed by The Menopause Society as appropriate first-line therapy for most healthy women under 60 or within 10 years of menopause. Non-hormonal options for women who cannot use HRT include paroxetine (FDA-approved for hot flashes), gabapentin, clonidine, and fezolinetant (Veozah — FDA-approved in 2023 as the first neurokinin-3 receptor antagonist specifically indicated for moderate-to-severe vasomotor symptoms). These options vary in efficacy and side effect profiles and require individual clinical evaluation. SPOKEmed discusses all appropriate options rather than defaulting to a single protocol.

Nocturnal hot flashes — night sweats — disrupt sleep architecture by repeatedly waking a woman or pulling her out of restorative deep sleep stages, even when she does not fully awaken. This results in poor sleep quality, elevated cortisol, increased hunger hormones, impaired immune function, and reduced cognitive performance. The metabolic and cardiovascular effects of chronic sleep disruption are substantial, making hot flash management a health priority — not just a comfort issue.