A couple of different ideas come to mind. Excess(ive) thyroid as in hyperthyroidism. Enlarged heart. Excess estradiol or inadequate testosterone. Sleep apnea. Medication side effect. Best to consult your family physician
What Can Help Hot Flashes and Night Sweats?by
Menopausal night sweats and hot flashes can be quite uncomfortable. They are often described..., and can often includes intense sweating. Hot flashes can also cause a rapid heart rate, pressure in the head...