Tami,

My son also had RSD that spread quickly.  It started in his right ankle in June 2006 and spread up that leg and went to his left leg in September.  It went up that leg and by Feb 2007, he had it in both legs from the hips down.  We started giving him pk injections with glutathione.  It detoxifies the body and is a powerful antioxidant.  If you look at research done in Holland, they think RSD is a consequence of a build up of free radicals and as the extremity gets saturated with the free radicals, they spread.  Hence the spreading of RSD.  Since my son has had these injections regularly, his RSD has not spread.  On two occasions it reduced his pain level dramatically.  His pain has not spread since Feb 2007.  Of course, it is impossible to predict how it will affect someone else and even to tell whether these injections are really the cause of his RSD not spreading for the last year after rapid spreading before that.  Unfortunately, the injections are quite expensive and we have not even tried to get Workers' Comp to pay for them.