A 42-year-old female asked:
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Why do body feel hot& cold on the first day of my cycle?

1 doctor answer
Dr. Wayne Ingram
Specializes in Obstetrics and Gynecology
Vasoconstriction: The blood vessels begin to narrow (vasoconstrict) limiting the amount of blood going to the endometrium(lining of the uterus which sheds) and peripheral places. this pattern alternates to open and close with feedback to your brain's thermostat (hypothalamus) which is next door to where the pituitary is undergoing hormone regulation. (changes) at the time of your menstrual cycle.
Answered on Sep 7, 2016

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