Mental Status Examination

Mental Status Examination: Overview, A/B/S - First Impressions

• Overview: Systematic, objective "snapshot" of current psychological state. Crucial for diagnosis & treatment planning.
• A - Appearance:
  • Build, posture, grooming, hygiene, self-care.
  • Dress (appropriateness), distinctive features.
  • Apparent age vs. chronological age.
• B - Behaviour & Psychomotor Activity (PMA):
  • PMA: normal, ↑ (agitation), ↓ (retardation).
  • Eye contact, rapport, attitude (cooperative, guarded).
  • Abnormal movements (tics, tremors, stereotypies).
• S - Speech:
  • Rate (pressured, slow), rhythm (prosody), volume, tone.
  • Quantity (talkative, poverty of speech/alogia).
  • Articulation, fluency (dysarthria, aphasia).

  ⭐ Pressured speech (rapid, difficult to interrupt) is highly suggestive of mania.

Mental Status Examination: Mood & Affect - Emotional Weather

• Mood: Sustained, internal emotional state (subjective; "climate").
  • E.g., euthymic, depressed, euphoric, anxious, irritable, dysphoric.
• Affect: Observed external emotional expression (objective; "weather").
  • Quality: e.g., euthymic, dysphoric, euphoric, anxious.
  • Range: e.g., full, restricted, blunted, flat.
  • Appropriateness: Congruent/incongruent (to mood/thought content).
  • Stability: e.g., stable, labile.

⭐ Anhedonia (markedly diminished interest or pleasure in almost all activities) is a core symptom of Major Depressive Disorder (MDD).

Mental Status Examination: Thought & Perception - Mind's Landscape

Thought: Evaluates how (form/process) and what (content) one thinks.

• Form/Process Disorders:
  • Flight of ideas (mania)
  • Loosening of associations/Derailment (schizophrenia)
  • Tangentiality, Circumstantiality
  • Thought blocking, Perseveration, Neologisms
• Content Disorders:
  • Delusions: Fixed, false beliefs (e.g., persecutory, grandiose, control).

    ⭐ Schneider's First Rank Symptoms (FRS), including specific delusions (e.g., thought insertion/withdrawal/broadcast) and auditory hallucinations, are key for schizophrenia diagnosis.

  • Obsessions, Phobias, Suicidal/Homicidal Ideation.

Perception: Assesses sensory experiences.

• Hallucinations: Sensory perception without external stimuli.
  • Auditory (e.g., voices; common in schizophrenia).
  • Visual (often organic: delirium, substance use).
  • Tactile (e.g., formication), Olfactory, Gustatory.
• Illusions: Misinterpretation of real external stimuli.
• Depersonalization/Derealization.

Mental Status Examination: Cognition - Mental Toolkit

• Consciousness: Level (Alert, Drowsy, Stupor, Coma).
• Orientation: Time, Place, Person (TPP). (Order of loss: Time → Place → Person).
• Attention & Concentration:
  • Serial Subtraction (e.g., 100-7).
  • Digit Span (Forward: 5-7; Backward: 4-6).
  • Reverse "WORLD".
• Memory:
  • Immediate: Repeat 3 words.
  • Recent: Recall 3 words after 3-5 min.
  • Remote: Major past personal/public events.
• Abstract Thinking: Interpret proverbs, similarities/differences.
• Judgment:
  • Social: Response to social situations.
  • Test: Hypothetical scenarios (e.g., "stamped envelope" test).
• Insight: Awareness of illness (Grades 1-6).

  ⭐ Grade 6 insight: True emotional insight-understands illness, its causes, implications, and is motivated for treatment/change.

Mental Status Examination: Insight & Judgment - Reality Checkpoint

• Insight: Patient's awareness & understanding of their illness.
  • Grades (1-5):
    • 1: Complete denial.
    • 2: Aware of symptoms; blames external factors.
    • 3: Aware of illness; blames external/organic cause.
    • 4: Intellectual insight (aware of illness; unknown self cause).
    • 5: True emotional insight (full understanding & motivation).
• Judgment: Sound decision-making & appropriate actions.
  • Types: Social, Test (hypotheticals), Personal.
  • Impaired in: Psychosis, Mania, Delirium, Dementia, ID.

⭐ Grossly impaired judgment may necessitate involuntary admission for safety.

High‑Yield Points - ⚡ Biggest Takeaways

• MSE is a structured snapshot of current psychological functioning, not a history.
• Mood is subjective feeling; affect is observed emotional expression (e.g., range, appropriateness).
• Thought process (form, e.g., flight of ideas) vs. thought content (e.g., delusions, suicidal ideation).
• Perception: Note hallucinations (no stimulus) and illusions (misinterpreted stimulus).
• Cognition: Assess orientation (time, place, person), attention, memory.
• Insight (illness awareness) and Judgment (decision-making) are crucial_.