Yes, that Morton Epsom product is nothing short of a miracle IMO.

I use mine every day on various problems. Works every time.

A couple of weeks ago my middle toes woke me up in huge pain... BOY I was surprised. So I rubbed the Epsom lotion on my shins and ankle and part of the knee, and in 10 minutes everything settled down.

I really think that we get micro circulatory blockages, and the magnesium lotion restores blood flow and the pain goes away because it was ischemic pain, not pure nerve pain.

Dr. Sarno discusses this in his books. Here is the wiki to explain:
http://en.wikipedia.org/wiki/Tension_myositis_syndrome

I believe it might not be just "psychogenic" but also due to inflammation and inflammatory cytokines affecting circulation.
The magnesium in concentrated lotion form releases this blockage, and for me lasts more than one day in fact. I rotate my application to wherever I have pain or stiffness. If I am going good, I use it just on my inner wrists and arms to lower my blood pressure, which it does very well too.