A friend of mine has a brief uncontrollable tremor in her hand right before she hears nosies/a voice. The voice is usually broken words or disjointed sentences. It can be negative but is also nonsensical or even just whispers as well.

She was diagnosed as a Schizophrenic but only hears noise/a voice. To my knowledge has nothing else indicative of Schizophrenia happen. No delusions, extreme paranoias etc. She has disorganized speech but so do I (undiagnosed anything). Like I trip over myself when I speak or we'll stop talking and then I'll randomly start talking about something that pops into my head. So I'm not sure if that would qualify as an indicator for Schizophrenia.

I can't find anything that states that someone will have a physical indicator prior to having an episode. She also only hears something for a few hours/a day or so every few months. (to my knowledge this has been twice in 8 months). She's also not been on any meds for 3-4 years and frankly no one could probably tell she's been diagnosed with this. So I have really wonder if it's the right diagnosis.

Could this be a misdiagnosis or an indicator of something else?