How can menopause-related hot flashes disrupt sleep?

Hot flashes are a common symptom of menopause caused by declining estrogen levels, which trigger sudden autonomic nerve activation. This activation leads to the dilation of blood vessels near the skin, resulting in a rapid increase in skin temperature and perspiration.1

When these episodes occur at night, they frequently disrupt sleep by causing physical discomfort, such as a sudden sensation of intense warmth, flushing, and sweating. These episodes may also be followed by a sensation of cold and shivering, further contributing to sleep fragmentation. Because hot flashes can recur frequently throughout the night, they often prevent women from achieving restful, continuous sleep.1