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He is right about the hypersensitivity to pain although if you want to continue your meds try a different doc. idk what you really want to know...you have two choices agree with him or go to a different doc and continue narcotic treatment

What your physician was more than likely referring to is what's known as Opioid Induced Hyperalgesia. The problem with this is that there is just not enough evidence to support it's existence in the majority of the chronic pain patient population. Depending upon who you ask, a few will say the issue is widespread but if you look at the studies it becomes apparent that this isn't the case.

"Hyperalgesia" is an experimental construct; the vast majority of articles about it are animal studies. There are isolated case reports where "hyperalgesia" might be an explanation for the clinical course of an individual patient, but there exist ZERO studies, to the best of my knowledge, showing that "hyperalgesia" is a significant clinical phenomena.

Unfortunately, there are those in our society; who would not allow chronic pain patients access to opioids, and all this does is create more barriers for those who need these medicines for semblance of life.

I believe narcotic hyperalgesia does exist.  Having pain all the time may  affect your brain's perception of pain as well and make you hypersensitive.  Since pain relief with narcotics is seldom 100%, it is hard to tell which is which.  Some patients find that the amount of pain they have is the same on or off of narcotics, and choose to stop narcotics rather than continue to increase the dosage, which might help for a week or two, but then requires another increase in dosage.  Have you tried other treatments: interventional pain management, TENS unit, hydrotherapy, accupuncture, physical therapy, NSAID's, etc. 

just be honest with your doctor. They know the body but not as much as you know your own... Remember you have a right to complain... They ARE in public service.

I was told by my Dr. that Hypersensitivity does exist, and speaking from experience I believe it to be partially true. Have you considered surgery, or any of the following treatments others have posted here. I was in the same situation you were in a few years ago, and I ended up having surgery, and it relieved my pain immediately. Surgery should not be taken lightly, but it can be highly effective if done by a good Neurosurgeon, or orthopedic. 

The reality is you can't stay on pain med's forever, and if alternative therapy's have not worked, you need to try something else. The goal for us all is to use Pain med's when needed, but try to work towards a solution that can get us opiate dependent free.

Good luck, and I feel for your pain. I have had and still do have DDD of the C-Spine, and U\I know the pain you deal with. Be careful to not switch to, to many doctors in a short amount of time. It is not your fault ,but you know how easy it is to get labeled, and then your hosed. Good luck in the future. God Bless.