Stress releases inflammatory molecules called cytokines.

These are Cox-2 controlled, and you can control this with diet to some extent. Avoidance of high carb high sugar is one step as these promote Cox-2 cytokines.

Taking some fish oil or krill oil may help.

But if you have some issues with pre-diabetes, or with food intolerances, or eat MSG in foods...you need to watch all of that, when under stress.

Some dietary changes are helpful. Many people are low in B12 and Vit D and this shows up this way in the beginning. So getting tested for this may help clarify things. Get your numbers, and don't accept "normal" as lab ranges in US are outdated.

Low magnesium is also a culprit.
Here are my threads on B12, Vit D and magnesium. This is a good place to start:

http://neurotalk.psychcentral.com/thread1138.html

http://neurotalk.psychcentral.com/thread92116.html

http://neurotalk.psychcentral.com/thread85103.html

A side note.... when you hyperventilate (under stress), you change the pH of the blood and then paresthesias occur (odd sensations). This may be worse if you are borderline for some deficiency or pre-diabetic.