Let me clarify a couple of things. First of all, Ultram is NOT a narcotic, it merely mimics some narcotic behaviors. One of these behaviors is a mild "addictive" nature, but because the medication is not strong in and of itself, the addiction is not as hard core as stronger, true narcotics like hydrocodone, oxycodone, or morphine.
Second, chronic pain sufferers often need the support of antidepressants to help deal with the realities of life that come with being in chronic pain. Changes in abilities, inabilities to pursue or fulfill goals, the ability to maintain or participate(or not) in regular activities, etc... can be very waring on the psyche. Often an antidepressant is prescribed to the patient, but it fails to balance out the highs and lows that comes with the daily swings in emotions. More commonly, a patient ends up being prescribed a "cocktail" of antidepressants/anti-anxiety meds that give a better, more even balance of coverage than just one single medication can provide.
In addition to my chronic pain issues, I also have chronic moderate depression and panic/anxiety disorder, a fairly common situation. I personally take Prozac, Trazadone, Buspar, and Klonopin on a daily basis. These medications keep me on an even keel, allow me to function the best I can, and not freak out when I have a rough patch. They also help me sleep, which really gets me through through those long miserable nights.
Some people still feel a stigma about taking "mental health" medications, but I say heck, whatever helps get you through the day is alright by me. I'm already in pain, so what good is constantly worrying about it going to do? Pain sucks... being irratible on top of it just make the pain worse and the situation seem more desperate.