Sully,

My pm doctor told me that the reason children recover from CRPS is due to intense PT. I regained significant mobility once I exercised in a warm pool, after taking low dose naltrexone for a few weeks. Hopefully, the combination of the nerve blocks and exercising in a pool will turn the tides for your son.

In regard to the car rides I have the same issue, I cannot tolerate a ride long than 20 minutes. I hope someone here suggests a way to make a long car trip bearable.