Hello. I have a hard lump right behind my left ear . I also a strange eye pain where my left eye twitches, is often really dry, and won t stay open without a struggle. It s often bloodshot. I had shingles in my back several months ago and still have the lasting nerve pain in the middle of my back. I sometimes take Vicodin for that. I was taking Gabapentin but thought that the eye problem was a side effect of that. I also had a sore throat and an ENT looked in there and saw nothing with the score. What do you think all these things are?