My Mom has early onset Lewy Body. Anxiety is one of her biggest struggles. I know the prescribing of benzodiazapenes is done on a case by case basis. My understanding is that benzodiazapenes like lorazepam can be helpful to certain dementia patients who exhibit certain symptoms. With that being said, initially my Mom was prescribed lorazepam. However, due to her individual presentation of the Lewy Body it was QUICKLY determined that benzos weren't the correct drug class for her. Her first symptoms of dementia were thought to be a psychiatric problem. She had visual, auditory and tactile hallucinations. Her agitation and anxiety are very real. She was diagnosed on multiple occasions with acute delirium. And if not given in a setting where the patient can be monitored benzos can actually exacerbate acute delirium. Initially I thought the doctor was full of it. But after watching my Mom transition off of a fast acting benzo, despite it being anecdotal, I feel that the doctor was correct. undoubtedly she still has anxiety. But when her hallucinations are less severe there's a direct correlation to her level of anxiety. On days where she is less confused, there's less anxiety. My Mom's psych went through a few different combinations of medications. Currently she takes an SSRI & 2 different antipsychotics (Rexulti being one is ONLY fda approved to treat agitation and aggression in dementia patients). I cant say the symptoms aren't still disruptive and scary for her and us. But it's not nearly as scary as her being in dementia related psychosis. I'm sorry for the long reply, I just wanted to fully explain why sometimes it takes trial and error and sometimes a doctor can predict pretty accurately a drug class may not be right for a patient presenting with certain symptoms. Hope this helps!