6. Marked, sustained high blood pressure (SBP >160 mm Hg, DBP >100 mm Hg) on two or more readings at a single visit and confirmed with two readings on a follow-up visit. If a participant is started on antihypertensive drugs at the start of the study, the participant may be cleared, but will not be started on aripiprazole until confirmation that the hypertension is well controlled (systolic blood pressure < 150, diastolic blood pressure < 100 mm Hg) on two readings at least 3 days apart.