Mental Status Examination

Appearance, Behavior, Speech (ABS) - The Grand Entrance

• Appearance:
  • Build (emaciated, obese), posture (stooped, erect).
  • Clothing (appropriate, dishevelled, eccentric), grooming & hygiene (kempt/unkempt).
  • Distinctive features: scars, tattoos, pallor, resting tremors.
• Behavior (Psychomotor Activity):
  • Mannerisms, gestures, tics, stereotypies.
  • Activity level: psychomotor agitation (↑) or retardation (↓).
  • Eye contact (good, poor, staring), rapport, attitude.
• Speech:
  • Rate (pressured/slow), rhythm (monotonous), volume (loud/soft).
  • Quantity (talkative, poverty of speech/alogia), tone (anxious, flat).
  • Clarity (clear, slurred).

⭐ Poverty of speech (alogia) is a negative symptom of schizophrenia, while pressure of speech is common in mania.

Mood & Affect - Emotion Commotion

• Mood: Patient's subjective, sustained emotional experience.
  • Reported: e.g., "I feel depressed," "anxious."
  • Types: Euthymic (normal), dysphoric (low, irritable), euphoric (elevated), expansive.
• Affect: Examiner's objective observation of emotional expression.
  • Key aspects:
    • Quality: Type of emotion (e.g., sad, angry).
    • Range/Intensity: (see flowchart).
    • Appropriateness: To thought content.
    • Congruence: With stated mood.

⭐ A 'blunted' affect refers to a significant reduction in the intensity of emotional expression, while a 'flat' affect indicates virtually no emotional expression.

Thought: Process & Content - Mind Maze

• Process (Form & Stream): How thoughts connect.
  • Normal: Logical, goal-directed.
  • Abnormalities:
    • Flight of ideas: Rapid speech, abrupt topic shifts (mania).
    • Loosening of associations: Disconnected ideas.
    • Tangentiality: Never reaches point.
    • Circumstantiality: Excessive detail, eventually reaches point.
    • Thought blocking: Sudden stop.
    • Perseveration: Repetition.
    • Neologisms: New words.
    • Word salad: Incoherent.
• Content: What patient thinks.
  • Delusions: Fixed, false beliefs (e.g., persecutory, grandiose).
  • Obsessions: Intrusive thoughts.
  • Compulsions: Repetitive acts.
  • Phobias: Irrational fears.
  • Suicidal/homicidal ideas.

⭐ Flight of ideas, characterized by rapid, continuous speech with abrupt changes from one topic to another, is a hallmark of mania.

Perception & Cognition Pt.1 - Reality Radar & Focus Filter

• Perception (Reality Radar): How stimuli are experienced.
  • Hallucinations: False sensory perception without external stimuli.
    • Types: Auditory, visual, olfactory, gustatory, tactile (formication).
    • Hypnagogic (pre-sleep) & Hypnopompic (post-sleep) are normal.
  • Illusions: Misinterpretation of real external stimuli.
  • Depersonalization/Derealization: Feeling detached from self/world being unreal.
• Cognition (Focus Filter - Basics):
  • Orientation: To Time, Place, Person (TPP).
    • Typically lost: Time → Place → Person.
  • Attention & Concentration: Ability to focus & sustain mental effort.
    • Tests: Digit span (Forward 5-7; Backward 4-6), serial 7s/3s.

⭐ Auditory hallucinations, particularly voices commenting or conversing (e.g., third-person auditory hallucinations), are highly suggestive of schizophrenia.

Cognition Pt.2, Insight & Judgment - Brain Bureau & Wise Choices

• Cognition Pt.2:
  • Memory:
    • Immediate: Digit Span (Fwd 5-7, Bwd 4-6).
    • Recent: Recall 3 objects @ 5 min.
    • Remote: Verifiable past events.
  • Abstract Thinking: Proverbs, Similarities/Differences.
• Insight: Patient's awareness of illness. Graded 1 (complete denial) to 6 (true emotional insight).

  ⭐ Anosognosia, or lack of insight into one's illness, is common in severe mental illnesses like schizophrenia and bipolar disorder, and is often associated with poor treatment adherence.

• Judgment: Decision-making capacity. Assessed via social scenarios (e.g., "found envelope").

High‑Yield Points - ⚡ Biggest Takeaways

• MSE (ASEPTIC): Appearance, Speech, Emotion, Perception, Thought, Insight, Cognition.
• Mood is subjective (patient's report); Affect is objective (observed emotion).
• Thought Form: Flight of ideas, tangentiality, loosening of associations, thought block.
• Thought Content: Delusions (fixed false beliefs), obsessions, suicidal/homicidal ideation.
• Perception: Hallucinations (no external stimuli) vs. Illusions (misinterpretation of real stimuli).
• Insight: Patient's awareness & understanding of illness; often graded.
• Cognition: Assess orientation, attention, memory, abstract thinking, judgment.