You don’t necessarily have to be a relative to file an interdiction suit. Louisiana Code of Civil Procedure, Title Vlll, 4541explains that “any person” may file a petition to interdict another adult or an emancipated minor. The petitioner must prove their case by producing clear and convincing evidence that the person should be interdicted. Regardless of who files the petition, the court must select a curator that is best suited to make decisions for the interdicted person.