According to the Mayo Clinic, stress/anxiety can cause "pins and needles" (neuropathy) sensations all over the body.
But how can this be? My understanding of the sensory pathway is that sensory receptors (nerves) fire "pins and needles" signals to the brain whenever there is a lack of blood flow to them.
So does stress reduce blood flow to nerves? Is it a chemical reaction, perhaps where stress releases hormones that prevent the nerves from functioning correctly? Something else?
I'm looking for a biological/physiological/scientific explanation of what stress does to make nerves misbehave.