yes for some people having an internal world is psychosis..

psychosis is a state of mind where reality testing does ...not...remain intact. the person has lost their ability to know what is real and what is not.

with DID reality testing remains intact, which means the person with this disorder knows whats real and what isnt, they know their internal world is not real life, they know their internal world is not where they live, its just their place in which they escape to when triggered.

another way to look at this is hold a piece of fruit. you know you are holding a piece of fruit, now put the fruit down and close your eyes and think about that fruit. open your eyes. now which was real and which was the thought....

thats the difference between psychosis and DID people with DID know which was them actually holding the fruit and which was the thought of holding the fruit.

with psychosis its a situation where the person believes both were one and the same or that the thought was the real action of actually holding the fruit.

with dissociation reality testing remains intact. a person may.... feel..... numb, spaced out, foggy headed but they know in reality physically there is no nerve damage, brain damage, eye sight damage causing this problem.

my internal world is sitting by a stream. I know that stream is not real and that in reality I am sitting here at my computer typing. I know that there really is not a stream running through my house, no leaves floating down a stream inside my house.

but if this was psychosis I would not realize that I am in my home, sitting at the computer typing this post, I would believe with all my heart that my home, computer and typing was not real, that i actually live where there is a stream running through my home and leaves floating down that stream.

for some people their internal worlds have a sense of reality but over all they know which is real and which is the mental internal world. like holding the fruit vs thinking about the fruit.

here in my location no DID is not psychosis because reality testing remains intact. to find out what your own treatment providers and location go by you will need to contact your treatment providers.

hope that helped.