Epilepsy and hallucinations?

My brother has epilepsy and was hospitalized for having hallucinations.  Without going into all of the details, I was wondering if anyone knows anything about such a thing happening.  He is also an alcoholic.  Our first thought was that he was hallucinating because of the alcohol, but someone (not a medical person) mentioned to me that people with epilepsy can have "epileptic hallucinations".  I found some info via the Internet, but was curious if anyone knows of such a thing.