I think it's possible that the endocannabinnoid system is involved. I know it is involved with healing physical trauma and injury.. inflammation is often involved with injury.
Wouldnt be surprised if the natural endocannabinnoid system is somehow compromised either genetically or through emotional trauma. And smoking weed just shows this issue. I would zone out and dissociate on weed... after abusing the drug I am stuck in that state.
I dont believe in homeopathy, but can see how small doses of cbd/thc could help heal that system. Much like a small amount of stress is good for you like cold showers or exercise. I feel pretty good anyway and maybe am sleeping better (hard to tell with a newborn baby in the house).
It's the same with absolutely any drug. Abuse it and it does harm. Take in a sensible dose and it can heal things. THC is an incredibly powerful drug. I took 3mg yday and it felt too much. Lowered to 2mg today and felt it hit the spot more. An average spliff is about 30mg thc, and inhaling is a far quicker onset and quicker peak. Time will tell if this will work anyway.
Edit; So it is easy to see that a quick and fast peak just overloads that system leading to dissociation as we have a weakened "self soothing" pathway if you like. There is a woman in Scotland that has a rare gene mutation, that causes her to produce excess amounts of anandamide (our own endocannabinnoid). She feels no pain, and regularly hurts herself accidentally, and she feels no FEAR or anxiety. Imagine that? I think DPD is definitely too much anxiety/fear, either through trauma or lack of endocannabinnoids (probably both). I feel pretty good emotionally anyway, which isnt bad for 5 days low dose. Results will probably take a month or two