A MENTAL STATUS EXAMINATION (MSE) documents specific domains of mental function.
Key domains:
Appearance and behavior: grooming, hygiene, eye contact, psychomotor activity (agitated, slowed, tics), cooperation.
Level of consciousness: alert, drowsy, stupor, coma.
Orientation: person (who they are), place (where they are), time (what day/year), situation — 'oriented x4' means all four.
Mood and affect: mood is the client's subjective feeling state; affect is the OBSERVABLE emotional expression (should match mood — congruent); flat affect (no emotional expression), blunted, inappropriate, labile.
Speech: rate, rhythm, volume, coherence.
Thought process: logical vs. disorganized, circumstantial (related but slow to reach point), tangential (never reaches point), flight of ideas (rapidly jumping), looseness of association.
Thought content: delusions, obsessions, phobias, suicidal/homicidal ideation.
Perceptual disturbances: HALLUCINATIONS (sensory experiences without external stimulus — auditory most common in schizophrenia; visual common in delirium and substance intoxication; tactile, olfactory, gustatory less common); illusions (misperception of real stimuli).
Cognitive function: attention, concentration, memory, abstract thinking, judgment, insight.
Insight and judgment: does the client understand they have an illness? Can they make reasonable decisions? NORMAL FINDINGS include: oriented x3-4, coherent thought, appropriate affect, no hallucinations, logical thought. AUDITORY HALLUCINATIONS require immediate documentation, reporting to RN/provider, safety assessment (are the voices commanding self-harm?), and medication evaluation.