As AMANDA BYNES meltdown continues her parents fear she may be suffering  from schizophrenia as she’s “heard voices for years”, say sources.

The troubled star’s parents Rick and Lynn Bynes are concerned Amanda could be suffering from schizophrenia, and have encouraged the former actress to seek professional help, which she has refused to do, reported.

The Bynes family moved from Texas to Los Angeles several years ago to be closer to their daughter. One reason for the move was because, “for years, since Amanda was a teenager, she exhibited distressing behavior,” a source said.

“Amanda has heard voices for years, and was concerned she was being spied on via smoke alarms, and clocks in her home.

"She would cover electronic items because Amanda believed that was the only way she wouldn’t be spied on.

"It’s extremely sad situation because Amanda just refuses to get help.”

The latest development in Bynes’ tragic downward spiral comes in the wake of her most recent arrest in New York City last week for allegedly throwing a bong out of her apartment window.