Welcome to HCM.
Do you have neck swelling on the front side, in the region of Adam's Apple i.e. is your thyroid
enlarged in size.
You may be having high basal metabolic rate
, which causes hot flushes.
Get your thyroid functions test done with blood.
If it is thyroid problem it needs to be treated.
Consult a physician, who will examine you and do the necessary investigations and on the bases of those findings treat you accordingly.
Wish you speedy recovery.