I had knee surgery 1 was a revision and 1 was first time Then I got Staff in the revision leg and spent 2 months in and out of hospitals. Then I had to have another surgery 1 month after the original surgery to go in there and clean things up and change what plastic they could. Had to leave the plastic on the knee cap and scrub it real good. I was on vancomycin for 7 week and I had a pick line. After that they put me on doxycycline hyclate 100mg 2 times a day. Now I have severe itching all over. Do you think it is from the medicine?