Assessment and Treatment of Mood and Thought Disorders

Initial Evaluation

• The American Psychiatric Association recommends a systematic assessment of mood, level of anxiety, thought content and process, and perception and cognition as core components of the mental status examination 1
• The initial psychiatric evaluation must include direct observation and documentation of the patient's current mood state and level of anxiety 1
• Assessing for hopelessness is crucial, as it carries significant clinical implications for risk stratification 1
• The Patient Health Questionnaire-9 (PHQ-9) with a cutoff score of ≥8 is recommended for detecting depression in medical populations 2
• The 2-item PHQ-9 should be administered first, assessing low mood and anhedonia over the past 2 weeks; if either item scores ≥2, the full 9-item questionnaire should be completed 2
• The Neuropsychiatric Inventory-Questionnaire (NPI-Q) is recommended for assessing behavioral and mood changes, particularly in cognitive disorders 3

Thought Content and Process Assessment

• Systematic evaluation for suicidal ideation, including both active and passive thoughts of suicide or death, is essential 1
• When suicidal ideas are present, assess the patient's intended course of action, access to suicide methods, possible motivations, reasons for living, and quality of the therapeutic alliance 1
• Screening for aggressive or psychotic ideas, including thoughts of physical/sexual aggression or homicide, is necessary 1
• Evaluating the logical flow and organization of thoughts through observation during the clinical interview is important 4
• Examining speech characteristics, including fluency and articulation, can reflect underlying thought processes 1

Additional Evaluation Components

• The mental status examination should include assessment of general appearance, nutritional status, coordination, gait, involuntary movements, sight, hearing, and skin examination for stigmata of trauma or self-injury 1
• Incorporating informant-based assessment using structured instruments, such as the AD8, IQCODE, and NPI-Q, can provide reliable information on changes in cognition, activities of daily living, mood, and neuropsychiatric symptoms 3, 5, 6

Treatment Approach

• Engaging the patient in shared decision-making by discussing treatment-related preferences, explaining the differential diagnosis, and collaborating on treatment decisions is recommended 1
• Addressing underlying mood disorders when thought content is influenced by depressive or manic symptoms is essential 2
• Documenting the rationale for treatment selection, estimated suicide risk, and rationale for any clinical tests ordered is necessary 1

Critical Pitfalls to Avoid

• Relying solely on symptom counts when assessing depression can be misleading; phased screening that incorporates risk factors and functional impairment is recommended 2
• Omitting assessment of suicidal ideation can be harmful; this is a required component of the mental status examination 1
• Attributing thought disorders solely to mania or attentional disturbances can be inaccurate; these are independent dimensions requiring separate assessment 4
• Interpreting cognitive screening results without considering education level, language barriers, and cultural factors can be misleading 4
• Conducting evaluations without obtaining collateral information when cognitive impairment or behavioral changes are suspected can be incomplete 5