HI Im 58yr Old Male With CLL Stage IV Cancer

HI Im 58yr old male With CLL stage IV Cancer in 2007 relapse in late 2015 treatment of IMBRUVICA for about 16mos now after six mos of imbruvica I came down with a severe case of shingles to this date the pain from the shingles is still here most of the time about a level 5-8 pain we have tried lanacane patch with little relief My question is will the pain very go away and is there a different treatment for the pain