• Welcome to Phoenix Rising!

    Created in 2008, Phoenix Rising is the largest and oldest forum dedicated to furthering the understanding of and finding treatments for complex chronic illnesses such as chronic fatigue syndrome (ME/CFS), fibromyalgia (FM), long COVID, postural orthostatic tachycardia syndrome (POTS), mast cell activation syndrome (MCAS), and allied diseases.

    To become a member, simply click the Register button at the top right.

Caffeine causes immediate vasocontriction?


Senior Member
I've noticed when I consume caffeine, and this seems to be dependent on my hormone or cortisol levels, but I have immediate vasoconstriction in my forearms and my finger tips go cold. This lasts about 30 minutes to an hour. It also seems to happen when I eat larger meals. I know cortisol can triple when you eat meals, larger ones.

It seems that the cortisol release is over responsive in these situations, and thus while my normal cortisol levels may be normal or low normal, any form of stress causes a hyper response, and too much gets released.

Does anyone else have this happen?