Kevin, one thing that may help your comfort levels, is to try
soaking your feet up to and including the problem ankle, in
epsom salts mixed with lukewarm water. Use about a dixie cupful to a bathtub, or 1/2 dixie to a dishpan (if you don't use the bathtub). Do this when you get home from work. It will also relax you and help you deal with the pain. It improves sleeping. If you take only oral magnesium, and have some reduction in circulation to your feet, the oral won't get to them effectively. The soak will bypass that failure.

This can often help lower pain, and reduce muscle stiffness.
The magnesium soaks in thru the skin and can block the NMDA pain receptors. You need to do it for at least 1/2 hr or up to an 1hr. Take a book or magazine in with you.

Many of us do this, and also at the RSD forum also.