Ouch is right I hope your feet start feeling better soon, for the edema they do manitol infusion to release the fluid from the nerve cells. this is serious edema. it would really hepl you. I get that rash on my right arm and back. the only thing that helps is an epsom salt bath and then my gel. the gel has lidocaine and 5 other drugs in it. it really is the only thing that take the pain away. Mine have been diagnosised as pain rashes. good luck to you. Hopeyou willl look up the manitol infusion- your swelling is fluid inthe nerve cell not the normal tissue swelling. you need to get rid of the edema. take care, cz