Diagnosing general psychiatry conditions involves a comprehensive approach. It starts with a physical examination and lab tests to rule out physical causes. A psychological evaluation, including structured interviews and questionnaires, assesses symptoms, thoughts, feelings, and behaviour patterns. A mental status examination evaluates appearance, behaviour, mood, thought processes, and cognitive functions. Diagnostic criteria are used to identify specific conditions and the individual's medical and psychiatry history, including family history, are reviewed to ensure an accurate diagnosis.