The DSM says AD is temporary. What if it isn't?

The DSM says that "Once the stressor is removed or the person has begun to adjust and cope, the symptoms must subside within six months."

What if the stressor isn't removed? It cannot be removed in my case, as the "stressor" is what I look like after *mod edit: suicide attempt*. They did all the surgery they could do, it is literally impossible for them to make me look normal again. I haven't adjusted or learned to cope, I just am used to it and hate myself and don't look at myself in the mirror or photos without being disgusted and sad.

Is it still just AD 27 years later? Is it PTSD now? Something else? It's not body dismorphic disorder because my face literally is deformed - it's not imaginary or skewed because of my mind. *mod edit* for the rest of my life I will look deformed. And that still bothers me enough to have a significant negative effect on my life.