Any experience in PTSD treatment?

Hi, I’m not sure if this is the right place to ask, so please pardon me.

This is not about me but rather about my boyfriend.

While he was there, he was diagnosed with PTSD related to childhood abuse by his parents. His psychiatrist in the US concluded that as long as he stayed in the US and maintained a certain distance from his parents in Japan, he would not need therapy or medication. His condition was quite stable while he was in the US.

However, due to personal reasons, he moved back to Japan in January of this year. After returning, he had a face-to-face encounter with his parents, which led to a very bad situation and serious conflict. Although he has now distanced himself from them and cut off contact, he is still suffering from headaches, anxiety, and violent nightmares caused by the recent encounter. It has been taking a serious toll on him both physically and mentally.

Because of this, we have been considering going to a mental health clinic in Japan. However, while looking at various clinics and hospitals, it seems that many of them mainly focus on depression, anxiety, insomnia, work-related stress, and similar issues. We haven’t found many places that specifically mention PTSD, especially PTSD caused by childhood domestic violence or abuse by parents.

We also understand that counseling and therapy are available here, but they are quite expensive for us at the moment.

My question is: how is PTSD usually treated in Japan, especially in cases involving domestic violence or childhood abuse?