Screening Phase: The screening phase will begin when informed consent is signed and be a maximum of 13 days. The investigators will assess the subjects who meet all eligibility criteria and collect the characteristic information of the subjects, such as demographic, medical history, etc. If subjects have been exposed to aripiprazole in the past (ie, tolerability has been established), then subjects will enter a washout period for 3～7 days from prior antipsychotic medications and other prohibited concomitant medications. If the investigator may reasonably verify that subject has been off antipsychotics for at least 3～7 days and has a history of tolerating aripiprazole, then the subject may have a screening phase of < 7 days as long as the subject has had at least a 3～7-day washout phase from other antipsychotic medications. Subjects are required to be hospitalized during the entire screening phase.