Lower estrogen tricks your hypothalamus—the body’s "heat manager"—into believing you are overheating, even when you aren't.
When estrogen drops, a group of neurons in the brain (KNDy neurons) become more active, triggering a chain reaction that initiates a flash, often accompanied by palpitations or anxiety. The Hot Flashes
Sudden warmth radiating through the upper body, skin turning blotchy, rapid heartbeat, and sweating. skin turning blotchy
These are hot flashes that occur while sleeping, which can significantly disrupt rest. Simple Ways to Find Relief (Lifestyle Adjustments) The Hot Flashes
A chilly, cold, or clammy feeling often follows the flash as the body rapidly cools down.