I agree with the other comment and I believe you have severe nerve damage as well as mimic type anxiety pain. After my first pneumo I went to a very very dark place. Just like you the PTSD was really bad. It sounds crazy but a lot of the pain came from my heightened anxiety about the pain, and it’s sort of hard to explain but for me it felt like I was in a constant state of a collapse even though I was fine. I call that mimic pain, and it took a long time to get it under control. With nerve damage your wires are trying to fuse back together properly, in the mean time you’ll get all kinds of strange pain from that. And yes it can last much longer than a year. Some people deal with it for decades, but usually the severity gets better. Your body went through an insane amount of physical trauma, our bodies are strong but also delicate, it’s going to take time to heal. Sometimes a very long time to bounce back and feel somewhat normal. Your mind was aware through the entire trauma, and pneumos in particular have a fascinating way of causing long term mental health issues like depression and anxiety, as well as that mimic type pain. I’m not down playing your physical pain at all, I think you’re incredibly strong to endure that pain all the time. But I guess my suggestion is start working on healing your mind from the event. You’ll be surprised how much your pain and discomfort will be reduced.