Stage 4 anal cancer left radiation neuritis of sciatic nerve, now in pain?

I am a 54 yr old who had stage 4 anal cancer the aggressive tx (treatment) of radiation and chemo saved my life but left me with radiation neuritis of my sciatic nerve causing pain in buttocks and at first my r leg now I had to have my r hip replaced twice within 2 wks this past July due to spontaneous fx. I have been dealing with this pain since may of 1999 (I began tx sept1998) my Dr had been treating monthly for this pain…now he is returning home to lebanon after treating me for 18+ yrs. He had told his replacement to to send me to a pain clinic I went back to the doctor last Monday he did neither he did not write pain meds or refer me to a new pain doctor… (what do you recommend?)

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