I wouldn't say healed ... but providing a non medicative form of control ... would be dolphins.

I was lucky enough to work with dolphins for about 10yrs. Not only did it help me, but we used to have many PTSD & suicidal victems visit within the courses of their treatment. So many of the same individuals returned on a regular basis, and always thanked us for the sense of well being they provided them.

My control factor was completely shot before working there. Which was one of the reasons why I quit the rat race to go do it. After about 6 months I could feel the difference.

I used to attend lots of conventions on the effect that the dolphins have. There are so many studies into it. I'm pretty sure that Seaworld still run programs similar.

Why dolphins can help? Who knows! There have been so many conjectures over why & how, but nothing conclusive.

But I agree with Anthony, it cant be healed. Memories fade, but unless you have dementia or altzeimers, you dont forget. And even if your memory disappears, you have a lifetime of behaviours that have been fashioned on them.

I believe the best we can hope for is being able to control it, and find a way to live with it.