Hallucinations and delusions are also symptoms of bipolar disorder, and many doctors have made mistake misdiagnosing bipolar patients as a schizophrenic one.
When hallucinations do apper, they are sign that the illness is taking worse course, probably due to being under medicated.
His psychiatrist needs to correct his dosage or to try new combination of meds.
It isn't easy to find the right cocktail of meds and doses to treat bipolar patient.
Best wishes for you and your husband!
Marija