Are there just two kinds of trauma we should be looking for in psychogenic non epileptic seizures?

I had a discussion some months back with a colleague who insisted that the only types of trauma that can bring about something as serious as a psychogenic non epileptic disorder (conversion disorder) are physical and/or sexual abuse in childhood. I disagree.  Over the past few years, my patients with psychogenic seizures have been educating me about other kinds of powerful trauma and how these could also play a...