Mental Status Examination

MSE Intro - Look & Act

• General Appearance:
  • Hygiene & grooming (e.g., kempt, dishevelled, unkempt).
  • Attire (e.g., appropriate, inappropriate, bizarre).
  • Apparent age vs. stated age; distinguishing features.
  • Build, nutritional status, level of consciousness.
• Attitude Towards Examiner:
  • Cooperative, friendly, attentive, interested.
  • Hostile, guarded, suspicious, evasive, seductive.
  • Apathetic, indifferent, perplexed, distractible.
• Behavior & Psychomotor Activity:
  • Eye Contact: Good, poor, staring, avoidant.
  • Level: Normal, increased (e.g., restlessness, agitation, hyperactivity), decreased (e.g., psychomotor retardation, stupor).
  • Abnormal movements: Tics, tremors, stereotypies (repetitive, non-goal-directed), mannerisms (goal-directed, idiosyncratic), posturing.

  ⭐ Echopraxia, the pathological imitation of an examiner's movements, can be seen in catatonia or schizophrenia.

• Rapport: Quality of interaction (e.g., easily established, tenuous, poor).

Speech & Feels - Talk the Mood

• Speech:
  • Rate: ↑ (mania, anxiety), ↓ (depression), pressured (mania - requires nuanced assessment per DSM-5-TR criteria).
  • Volume: ↑ (mania), ↓ (depression), monotonous (depression, schizophrenia spectrum disorders).
  • Quantity: Paucity/Alogia (depression, schizophrenia spectrum per current diagnostic criteria), Logorrhea/Voluble (mania).
  • Tone: Reflects mood; e.g., hopeless in depression.
  • Articulation: Dysarthria, stuttering.
• Mood (Sustained, Subjective): Patient's self-reported emotional state.
  • Types: Euthymic (normal), Persistent Depressive (formerly dysthymic), Euphoric (high), Anxious, Irritable.
  • Alexithymia: Difficulty identifying/describing own emotions.
• Affect (Observed, Objective): Examiner's observation of patient's emotional expression.
  • Range: Full, Restricted, Blunted, Flat (severe reduction).
  • Congruence: Appropriate/Inappropriate to thought content/situation.
  • Stability: Stable vs. Labile (rapid, exaggerated shifts).

⭐ Flat affect (diminished emotional expression) is a key negative symptom in Schizophrenia spectrum disorders per DSM-5-TR classification.

Thought Streams - Sense & Psyche

Thought Process (Form)

• Normal: Logical, goal-directed.
• Abnormalities:
  • Flight of Ideas: Rapid, linked topic shifts (Mania).
  • Loosening of Associations (Derailment): Illogical connections (Schizophrenia).
  • Tangentiality: Never returns to point.
  • Circumstantiality: Excessive detail, returns to point.
  • Thought Blocking: Sudden stop (Schizophrenia).
  • Perseveration: Repetition of response.
  • Neologisms: New words.
  • Clang Associations: Sound-based links.

Thought Content

• Delusions: Fixed, false beliefs (culturally incongruent).
  • Types: Persecutory, grandiose, referential, control (insertion, withdrawal, broadcast), nihilistic.

  ⭐ Schneider's First Rank Symptoms (FRS) include specific delusions of control (thought insertion/withdrawal/broadcast) & certain auditory hallucinations. While historically considered highly suggestive of schizophrenia, modern DSM-5-TR emphasizes broader symptom assessment and dimensional approach rather than relying on FRS specificity.

• Obsessions: Intrusive, recurrent thoughts/urges.
• Suicidal/Homicidal Ideation: Assess risk.

Perception

• Hallucinations: False perception without stimuli.
  • Auditory (Schizophrenia).
  • Visual (Organic states, delirium).
  • Tactile (e.g., formication - substance withdrawal).
  • Olfactory/Gustatory (Temporal Lobe Epilepsy).
• Illusions: Misinterpretation of real stimuli.
• Depersonalization/Derealization: Detached from self/surroundings.

CogniCheck - Know & Judge

• Cognition (Higher Mental Functions):
  • Consciousness: Level of awareness (alert, drowsy, stupor, coma). GCS primarily used for acute brain injury assessment, not standard MSE.
  • Orientation: Time, Place, Person (📌 TPP). Disorientation suggests organic issues.
  • Attention & Concentration: Focus; serial 7s/3s, spelling backward, digit span tests.
  • Memory:
    • Immediate: Registration (3 words).
    • Recent: Recall (3-5 min).
    • Remote: Past events.
  • Intelligence & Abstraction: Knowledge, vocabulary, proverbs, similarities.
• Insight (Understanding of Illness):
  • Traditional grading: 1 (denial) to 6 (true emotional insight & change). Modern assessment emphasizes qualitative description considering multiple dimensions.
  • Awareness of mental disorder and its implications.
• Judgment (Decision-Making):
  • Test: Hypothetical social situations (e.g., "fire in theatre").
  • Social: Appropriateness of social behavior.
  • Personal: Realistic future plans.

⭐ Lack of insight (anosognosia) is a core feature in severe mental illnesses like schizophrenia and is a poor prognostic indicator.

High‑Yield Points - ⚡ Biggest Takeaways

• MSE: Current mental state snapshot; vital for BNS Sec 19 (insanity) & fitness to plead.
• Key: Appearance, Behavior, Speech (ABS); Mood (subjective) vs. Affect (objective).
• Thought: Assess Process (flight of ideas) & Content (delusions, suicidal ideation).
• Perception: Note Hallucinations (auditory in schizophrenia, visual in organic) & Illusions.
• Cognition: Check Orientation (TPP), Memory, Attention. MMSE is a tool.
• Insight & Judgment: Crucial for criminal responsibility & testamentary capacity.