I had a head injury (a mild TBI which didn't leave me unconscious, just concussed), but it did leave me with post concussion syndrome for about 6 months which led to a mental breakdown.
I was then prescribed a first generation typical antipsychotic called Pericyazine off label for severe anxiety and insomnia, that I suffered an adverse effect from. It gave me a permanent neurological involuntary movement disorder called tardive dyskinesia that is a bit like Tourette's and Parkinson's disease combined.
AMA 🙃