Eddie, I was not asked to take aspirin until I got the disease Polycythemia Vera, in which there CAN be lowered circulation in the peripheries (toes, legs, hands). The doctors said they didn't know what caused the spasms or jerking, but they wanted me to take the aspirin because it makes the platelets in the blood less sticky, and thus they pass through vessels more easily. But I am convinced you are right--poor circulation induces spasm, makes PN pain worse.
I cannot take aspirin by mouth, so I grind it up in heavy skin cream and rub it on my skin. Some hematologists are suspicious that won't work, others say it seems to work, some say it might even work better that way. So I keep rubbing it on, about l/4 of one uncoated powdered aspirin per day (equiv. of a baby aspirin a day). If I did not do it this way I would not do it, because of stomach pain. It is a requirement for Polycythemia Vera, so I had to think of a way; actually my late husband thought of this way. I miss his engineering mind.
It's sad when a beautiful mind goes away.