Originally PTSD symptoms, including nightmares, that emerged after a 15 year hiatus. Spent some time focusing on childhood trauma. Then there was work stress, then my spouse became terminally ill and died, then my child hit puberty, then I revisited work stress , then I got involved in a new intimate relationship. Lots of transformation over the past 10 years with the same therapist. Now for me it is mostly relationship oriented, but I don't think that will last forever. But the ongoing "treatment" is self care for me, making sure I'm dealing with the vicarious trauma from my work with traumatized people.