Mental health questionnaires help to detect depression, anxiety, attention deficit hyperactivity disorder, personality disorders and other psychological conditions. These questionnaires help physicians identify symptoms and make accurate diagnoses, according to Mayo Clinic.
Questions on mental health surveys elicit information from patients about their thoughts, feelings and behaviors, Mayo Clinic states. Responses allow medical professionals to evaluate the severity of symptoms and assess them against standards in the Diagnostic and Statistical Manual of Mental Disorders. The manual defines the characteristics of a wide-range of disorders, such as personality disorders, substance abuse problems, sexual dysfunction and impulse control issues. In addition to questionnaires, doctors also may order physical exams and lab tests before making treatment recommendations.