Amanda Bynes -- Parents To Tell Judge They're Worried She'll Harm Herself

Amanda Bynes' parents will tell a judge today ... the actress is in serious danger and could cause physical harm to herself ... and that's why they want to take control over her life, TMZ has learned.

Sources connected to the family tell us ... Amanda's parents will be in court this morning with their attorney, Tamar Arminak ....asking the judge to create a temporary conservatorship for their 27-year-old daughter.

Here's what her parents must prove:

1) Amanda does not have the ability to provide for her own physical health -- along with food, clothing and shelter

We're told her parents will use the gasoline fire in Thousand Oaks, which singed her clothes and caused damage to a home, as the centerpiece of their argument that she's in imminent danger of physically harming herself.

2) Amanda cannot make sound financial judgements

Amanda's parents will argue her mental illness makes her unfit to protect her life savings.

3) They can provide a stable home for their daughter

We're told Amanda's parents will tell the judge ... they're prepared for Amanda to move into their Thousand Oaks home and they will provide all necessary care.

FYI -- Amanda owns two properties, but they're both leased out. She's lived in several hotels and apartment buildings ... but she's been thrown out of almost every one due to her erratic behavior.

4) There are no realistic alternatives to a conservatorship

We're told Amanda's parents will argue she's suffering from schizophrenia but will not seek treatment because she doesn't believe she has an illness -- even though she acknowledges there's a "good Amanda" and a "bad Amanda." They believe the only way to keep her safe is to provide round-the-clock care.

If the judge grants the temporary conservatorship, we're told the parents will immediately petition the court to make the conservatorship PERMANENT ... ala Britney Spears. The judge would then set a date for a full-blown hearing and appoint a lawyer to rep Amanda.

Today's hearing is set for 8:30 AM PT -- so stay tuned.