An interesting premise so far! I'm looking forward to seeing how you develop this fic.
BTW, since you asked- it's "throes of hallucination", not throws.
Also, "though he had no idea who he was, or who anyone else was, or where he was at" might be better phrased as "although he didn't remember himself or anyone else, and didn't recognize his surroundings" or something similar. Don't end a sentence with the word "at". :)