For some weird reason the psychiatrist I had as a teenager took this down in her notes as being a possible side-diagnosis. She never told me about this, though, and I only found out years later when I applied for SSI.
I'm thinking it was actually Asperger's/autism they were seeing and they mistook it for this. For example, as an adult I was trying to describe my difficulty with eye contact and all I could think of to say was, "It feels as if they're reading my mind." I was careful to include that as if
so they wouldn't think I was psychotic/delusional, but I was prescribed an antipsychotic anyway. I think that this med (Risperdal) is also sometimes prescribed for autism, though?--I didn't know that at the time, and though the psychologist mentioned Asperger's as a potential diagnosis she never followed up on it. Anyway, I read that schizotypal people often use similar phrasing, that it's "as if" somebody is reading their mind or whatever.
I have LOTS of weird/paranoid/magical thinking and I suspect that was the cause of the schizotypal label, but I realize this thinking is irrational, so I chalk it up mostly to my OCD and possible autism.
Oh. I have semi-frequent olfactory hallucinations (no idea what causes them)...but nobody in therapy ever asked about that (there's a lot they never asked me about), so they couldn't have used that in their diagnosis.
Other symptoms you listed:
*Blunted affect--no, mine is merely "constricted," because I try to hide myself and my emotions away from people. This too was mentioned in the notes. Actually I'm painfully emotional and border on histrionic at times.
*Odd appearance/behavior--I think I give the impression that I'm rather "slow" with how I dress and move, but I wouldn't really call it eccentric...like I said, I've learned to hide away my weirder traits. Yes, I'm definitely eccentric
but I don't show it (and the therapists didn't even get past the tip of the iceberg asking about my eccentricity). Again I blame some form of autism for that.
*Poor rapport/withdrawing--SA combined with autism (I can't really "connect" with others if we don't have a lot of interests in common).
*Magical thinking/paranoia--already mentioned this.
*"Obsessive ruminations without inner resistance"--I obsess and ruminate a lot, yes, probably due to OCD, but I have no clue what "without inner resistance" means.
*Depersonalization/derealization--no, I don't tend to experience this except rarely and fleetingly. I just daydream a lot.
*Metaphorical/elaborate thinking/speech--autism. (I'm longwinded but I wouldn't call my speech/writing "circumstantial" or vague.)
*Delusions/psychosis--just odd smells.
As far as I'm aware, no "schizo-" traits of any kind run in my family, but then again neither does SA or autism. I'm the only weird one.
Tl;dr--schizotypal PD was suggested as a diagnosis for me as a teen, but I think the symptoms could be explained by a combination of SA, OCD (both diagnosed), and Asperger's/autism (not diagnosed but also suggested, years after the schizotypal PD suggestion).