Psychiatric mental status exam: mood, thought, perception, insight

What it is

The psychiatric mental status examination is the 'physical exam' of the mind: a snapshot of the patient at the moment of the interview, recorded in a fixed order. Most of it is gathered by observing and listening during the conversation, then completed with direct questions about mood, unusual experiences and thoughts of suicide. It separates what the patient reports (symptoms) from what the examiner observes (signs).

Landmark anatomy

• Mood and emotion: limbic circuits including the amygdala and the prefrontal cortex.
• Memory: the hippocampus and medial temporal lobe.
• Judgment, planning and insight: the prefrontal cortex of the frontal lobe.
• Any medical or neurological disease of the brain can produce psychiatric signs, so the exam is always read alongside the physical exam.

Technique, step by step

1. Appearance and behavior: grooming, clothing, eye contact, cooperation, and psychomotor activity (slowed, agitated, abnormal movements).
2. Speech: rate, volume, quantity and spontaneity; note pressured or very slow, sparse speech.
3. Mood: ask how the patient feels and record the answer in their own words.
4. Affect: describe the observed emotion, its range (full, restricted, flat), its stability and whether it fits the content.
5. Thought form: is it goal-directed, circumstantial, tangential, with flight of ideas, loose associations or blocking?
6. Thought content: delusions, overvalued ideas, obsessions, phobias, and ask directly about suicidal and homicidal thoughts and plans.
7. Perception: ask about hallucinations (hearing, seeing or feeling things others do not) and illusions.
8. Cognition: consciousness, orientation, attention and memory, as in the neurological mental status exam.
9. Insight: does the patient recognize that something is wrong and that it may be an illness?
10. Judgment: how the patient makes decisions and foresees their consequences in daily life.

Abnormal findings

• Depressive pattern: low mood, restricted affect, slowed speech and movement, guilt, hopelessness and possible suicidal ideas.
• Manic pattern: elevated or irritable mood, pressured speech, flight of ideas, grandiosity and reduced need for sleep.
• Psychotic pattern: delusions, hallucinations (usually voices), disorganized thought and often poor insight, as in schizophrenia.
• Anxious pattern: worry, restlessness and physical signs of arousal with intact reality testing; obsessions and compulsions in obsessive–compulsive disorder.
• Fluctuating consciousness, inattention and visual hallucinations point to delirium, a medical emergency, rather than a primary psychiatric illness.

Common errors

• Labeling a patient as psychiatric without ruling out delirium, intoxication, withdrawal or a medical cause.
• Not asking about suicide out of fear of suggesting it; asking directly does not increase risk.
• Mixing up mood (what the patient says) and affect (what the examiner sees).
• Recording judgments ('difficult patient') instead of describing what was observed.

Test yourself

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Connections

← All of the clinical exam

Educational content on the clinical exam; it is learned and practised under supervision. It does not replace assessment by a health professional and is not for self-diagnosis.

Sources: Mental status testing (MedlinePlus, U.S. National Library of Medicine, 2024); Suicidal Behavior (MSD Manual Professional Edition, 2024).

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Representative model, for educational purposes only.