Clinical Interview: The psychiatrist or mental health professional talks with you about your current symptoms, thoughts, and feelings, asking specifically about hallucinations (like hearing voices) and delusions (false beliefs).
Input from Family or Caregivers: Because symptoms can affect how a person perceives reality, clinicians often request permission to speak with family members or close friends to understand changes in behavior over time.
Mental Status Examination (MSE): The provider observes and evaluates your appearance, behavior, speech patterns, mood, thought process, and cognitive function during the session.
Medical and Psychiatric History: Reviewing past mental health treatment, medical records, and family history of psychiatric conditions to spot patterns and genetic risk factors.
Physical Exam and Lab Tests: Blood tests, urine drug screens, or brain imaging (like an MRI or CT scan) are used to rule out physical illnesses, brain injuries, infections, or drug toxicity that can mimic psychotic symptoms.
Diagnostic Criteria Review: The clinician compares the gathered history and timeline against established guidelines (such as the DSM-5, The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition), which require specific active symptoms to be present for a portion of a month, with continuous signs of the disorder lasting for at least six months.