What Causes Excessive Sweating?

Perimenopause

Perimenopause — the period of time just before the female body enters menopause and stops having a menstrual cycle — causes sweating for much the same reason as pregnancy: the body reacts to shifting hormonal levels. The hot flashes of perimenopause, however, are more widely known than the pregnancy sopping-wet-underarms. Shifts in estrogen have a direct effect on the body's temperature control settings, and some people may be more prone to flushed skin and the need to cool core body temperature, though science is not entirely sure why.