Mental Status Examination

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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_.

Practice Questions: Mental Status Examination

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Flashcards: Mental Status Examination

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_____ disorders are when a patient consciously creates physical and/or psychological symptoms in order to assume a "sick role" and get medical attention and sympathy (primary/internal gain)

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_____ disorders are when a patient consciously creates physical and/or psychological symptoms in order to assume a "sick role" and get medical attention and sympathy (primary/internal gain)

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