I have read that Patsy was taking anti-depressants, specifically Prozac. Prozac is an SSRI. In 1996 it was not known in the psychiatric field that prescribing SSRI's could exacerbate mania in individuals with bi-polar disorder. Reports say that she was "moody". Without going into the specifics of a DSM-IV diagnosis of the sub-types of bi-polar let's say "moodiness" applies. She may have been (undiagnosed) bi-polar. SSRI's prescribed exacerbated a manic episode. Manic episodes can be of varying intensities, some are psychotic.