I just had a tendency towards toxicity. I had to have high levels to feel good and I would teeter over the edge. I had 3 toxicities before we gave up (kept going because it worked so well that when we stopped it I'd feel rotten). The hallucinations one was the 2nd. Somehow my pdoc recognized that what I was describing was neurological and not psychiatric and so I got help quickly. I had not realized I was having symptoms for weeks until the ER doctor started going through it with the resident and I started answering yes a lot.