What is Sarcoidosis please? I have had chronic pachy meningitis for nearly 3 years...am on Methotrexate and Prednisone...had 12 MRI s. all this has been put down to Sarcoidosis. I then got Shingles 2.5 years ago in three nerves...aroundmy shoulder, breast, and right arm, hand and fingers, and have been left with severe PHN in my right hand and fingers since that time. I had second lot of Shingles 4 months ago, and the PHN has increased in intensity. I am on Oxycontin, Lyrica, Panadiene Forte etc etc but nothing helps. Could all of this be causing Sarcoid or is it the other way around?? Your help would be much appreciated.