rambling is good my friend.
You seem to be overly aware of your symptoms (like most HPPD people), and I think that comes with a measure of realizing what's not "normal" and what should be - something a crazy person would not be able to do. I doubt you are schizo, I've had the exact same problem that you mentioned: the battling back and forth between what seems like "two yous" in your head.
What I think it comes from, is OCD.
Other than that, I haven't ever really talked about HPPD with people other than my parents in the summer (which was more of a built up explosion, rather than a educated discussion).
I don't know how understanding people who don't know what it is, will be. I suppose it makes sense though, they will probably just stigmatize the "drug usage" bit, especially if you are linking it to some lasting neurological problems. I definitely would love to be able to express my frustration more often though, regardless of whether the listener is thinking poorly of my story.
For me, I have come to realize that HPPD has unleashed an already present demon into my world - anxiety.
I always had it in various forms: most prolifically with dealing with girls. It lead to me not even being able to talk to a girl without stammering and fidgeting and feeling like I was about to stop breathing.
Post-HPPD *or...during* it rears itself irregularly in weird ways. If I start to get panicky over homework or an exam, out comes the anxious bug.
I think getting some treatment just for that would probably be a helpful thing (for me).
Anyways, figured I'd reply to indicate that atleast on here, people will read what you write.
(also, not to be a prude, but if you space out your sentences, it's much easier on the eyes - especially if the eyes are already screwy).