There seems to be some debate about how this is classified. I know that a person with no known disorders or illness except for PTSD can have psychosis as a result of PTSD. Depending on the school of thought believed by the diagnostician the visual, tactile, an auditory representations of the previous traumatic event, or representations bearing a resemblance to the situation may or may not be classed that way.
I found this article on the subject to be very interesting as it deals directly with this question among others of interest to those like us.
https://www.madinamerica.com/2014/08...-dissociation/