Former American actress Amanda Bynes's lawyer Tamar Arminak has rubbished rumours that she was ever diagnosed with schizophrenia.

Bynes decides to leave the spotlight after she was hospitalized for psychiatric treatment for her erratic behaviour last year, reports contactmusic.com.

"There has been much speculation about Amanda's medical condition. She asked me to dispel certain rumours. For the record, Amanda does not have schizophrenia, nor has she ever been diagnosed with it," said Arminak.

Maintaining that the actress never had a history of alcohol abuse or hard drugs, Arminak added: "She's currently on zero medication, and is devoted to living her life as healthy as possible.

"She continues to undergo outpatient therapy several times a week. She's still working through the causes of her past bizarre behaviour," said a source.