'Star Wars' Star Jake Lloyd -- Beat His Mother Weeks Before Crash ... Suffers from Schizophrenia

'Star Wars' actor Jake Lloyd -- who played Anakin Skywalker -- suffers from schizophrenia, went off his meds and attacked his mother before his latest police run-in... TMZ has learned.

We've learned that the Indianapolis Metro Police Department was called on March 26 to report the assault. During her interview with cops, Lloyd's mother, Lisa revealed Jake has schizophrenia and was off his meds.

According to the report, Lisa told police Lloyd showed up at her house and began yelling at her ... telling her that she ruined his life. When she wouldn't let him in, Jake knocked her down and stomped on her three or four times, causing abrasions and bruising on her arm.

When police arrived, Jake was already gone. His mom declined to press charges.

TMZ spoke with Lisa ... who confirmed Jake began showing signs of schizophrenia when he was 19. She said Jake has gotten help in the past and the family plans to try and get him help again ... once he's released from jail.

Lisa said despite the March incident, Jake is not a violent person.