my anterior discectomy with graft and instrumentation fusion was done 7/31. in the hospital I was given morphine pump and valium..eventually starting itching. Assumed from the morphine. Was then switched to percocet and stayed on valium. This continued while home. when I saw the OS for my 3 week follow-up I had hives on my arms. he said to stop the valium. I have had hives on and off while just on percocet. and had to re-start valium due to muscle spasms from pt. This morning I only took one percocet and one 2mg. valium. Later in the day I sat in the yard for five minutes and broke out in hives on my arms..I am going crazy now and will have to take a benedryl. I plan on calling the doctor tommorrow as both meds can have side effects of hives...I tired to switch to x-tra strength tylenol with no help. Any advice would be appreciated!