"my elderly dad was prescribed a low dose of ativan for anxiety. within 2 weeks he started having auditory hallucinations and could not sleep because the &quot;walls were talking to him&quot;. after he passed every physical test in an emergency visit to the local er- from a cat scan to blood work and everything in between, the psychiatrist on duty matter of factly told me that ativan has been known to cause delirium in elderly patients. "