This is preliminary report on a new sub-category of personality disorders, tentatively termed here as the Reverse Multi-Polar Disorder, or RMPD. Literature reviews have not returned any case occurrences of similar nature. Please submit similar cases to Author.
Below is a transcript of the session with the patient. Note that there are no symptoms of psychosis, as the patient is aware of and acknowledges the presence of other entities.
M&M: one doesnt know these things
S: stop using one to refer to yourself la
M&M: ok we shall refrain
S: yes, all of you.
M&M: but there is only one of us
S: is there like, reverse multipolar disorder?
S: one has multiple personalities, but they all think they are the same person
M&M: hey thats cool!
M&M: oooh we have a new disorder!
M&M: thanks!
M&M: from us
* For all the scientific bores out there, here's the disclaimer. This is not a real report nor is it meant to stake claim on the term "Reverse Multi-Polar Disorder" and its abbreviation "RMPD". Gags are such hassles.