Gynaecology & Obstetrics General 74b6acef All except one is true about Hot flushes A Affects only upper trunk and head and neck B Starts to occur a year before menopause C occurs upto one year after menopause D Possible role of serotonin is implicated High-Yield Explanation Hot flushes start to occur a year or two before menopause, intensify in 1st year after menopause and on an average last upto 5 years.