Asking mentally ill people if they are mentally ill is not a reliable way to determine if they are mentally ill. The same is true for alcoholics and drug addicts.
Many people will deny their circumstances because they are mentally ill and don't realize it, or are simply in denial, or because they think they will get more help if they hide their problems.
Many people will deny their circumstances because they are mentally ill and don't realize it, or are simply in denial, or because they think they will get more help if they hide their problems.