Re:Test upper body flush
some people get it from the extra sweating, i just shower more and splash some talc about, Mast stops me sweating as well strangely.... No idea why but that's not a practical suggestion anyway.
As ib said, could be BP. Is your diet ****? If so try and clean it up a bit on cycle, live with it and try and eat a bit of celery and drink more water, as much as you can handle drinking.
If it's not down to diet then the same measures apply, there's not much else you can do and tbh it's no major issue on a short term cycle anyway. Unless it rockets but you'd obviously be coming off if that was the case...