Hi SunshineGirl
Good question-RSD is an autonomic disorder. Which means involuntary organs affeced, circulation, temperature, heart, lungs. our blood pressure can be high and then LOW I'll drop 50 or more points both top and bottom numbers. I've even passed out when went too low. sympathetic nervous system may be 150/90 and then the parasympathetic nervous system may drop it 90/50 . RSD affects the immune system . My first system of RSD was frozen shoulder following surgery. PT told me after I got my range of motion back- it may go to other side After a year of remission -it went to the other side. Another remission. Original side- hand next frozen hand- year later moved to right hand. then down legs and feet- full body. Also is why we are burning hot sometimes, then ice cold.
Please stay with us-I learned so much from friends here- helps me cope.
Take care, loretta