Current Medical Diagnosis & Treatment in Psychiatry

Psychiatric Interview

Psychiatric Interview: Conclusion

The purpose of the psychiatric interview is to obtain information from the patient about the presenting problem and its precipitation and about previous disorders, predisposition, biopsychosocial strengths and limitations, reason for the current presentation, insight, and desire for help. The psychiatric history covers topics that range from identifying data to coping mechanisms. The four stages of the interview—inception, reconnaissance, detailed inquiry, and termination-are adapted to different topics.

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Practical Matters

Laboratory Testing
Psychiatrists must increasingly rely on laboratory testing to confirm their diagnostic impressions, to detect medical or neurologic illness that may underlie or coexist with neuropsychiatric symptoms, and to ensure the safe and maximally effective use of certain psychotropic medications. Clinicians should understand the relevance of any laboratory test to the clinical problem presented by the patient and be ready to use the information obtained to enhance the findings of the psychiatric history and MSE. 

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Abnormalities of the Sense of Self

The normal person has a sense of selfhood composed of the following elements: a sense of existing and being involved in one’s own body and activity; a sense of personal continuity in time between past, present, and future; a sense of personal integrity; and a sense of distinction between self and outside world. In psychiatric disorders, any or several of these phenomena may be disturbed. For example, the individual may feel uninvolved in his or her own body or actions, like a spectator looking at another person (as in depersonalization); the individual’s sense of temporal continuity may be dislocated, with the past and future seeming remote and the present but a series of disconnected scenes; the individual’s ego may feel as though it is falling apart, shedding, fragmented, or split in two; or the difference between the self and other persons or objects may have become blurred.

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Abnormal Preoccupations & Impulses

A phobia is a morbid and irrationally exaggerated dread that focuses on a particular object, situation, or act (see Chapter 22). Phobias differ from generalized anxiety in their focused quality; although a diffuse anxiety state sometimes precedes a phobic disorder. The patient is aware of the exaggerated, irrational nature of a phobia and regards it as symptomatic. The patient often tries to avoid the phobic situation or is compelled to perform actions (such as hand washing) in order to eradicate the object of the fear, or atone for tabooed action.

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Abnormal Convictions

A delusion is a false belief that is not susceptible to argument and that is inconsistent with the subject’s sociocultural background. Bordering on delusion is the overvalued idea, a notion that may be eccentric rather than false but that becomes a governing force in the patient’s life.

It is not always easy to draw the line between an eccentric individual, somebody who holds unfamiliar views that are nevertheless consistent with a different sociocultural system, and a deluded person. Indeed, some people drift across the misty boundaries between these categories. An active delusion, however, is rigid, unshakable, and self-evident. It dominates the subject’s life, subordinating all other matters. It is private, idiosyncratic, ego-centered, and inconsistent with the common experience of people from the same background. A delusion, therefore, isolates the subject from others and alienates them from him or her.

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Abnormalities of Thought Content

Several disorders are virtually defined by the presence of abnormalities of thought content. In many instances the patient will complain of these phenomena (eg, a phobia of heights); in other cases the patient appears to have accepted an eccentric idea (eg, the delusion of being a reincarnation of Christ) and to be acting accordingly. Abnormal thought may be divided into the following categories: abnormal perceptions, abnormal convictions, abnormal preoccupations and impulses, and abnormalities in the sense of self.

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Components of the Mental Status Examination

Table 8-4 summarizes the areas to be covered in the MSE. The following sections describe these areas in more detail:

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Types of Mental Status Examinations

Brief Screening Mental Status Examination
When a patient has been referred to an ambulatory clinic for a situational or personality problem, and none of the indications for a comprehensive screening examination pertain (see next section), a brief, informal screen is sufficient. The brief screening MSE is completed during the inception, reconnaissance, and detailed inquiry stages of the psychiatric interview. 

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Stages of the Psychiatric Interview

Inception
If the interviewer works in a clinic, at the opening of the psychiatric interview he or she goes to the waiting room, introduces himself or herself to the patient, accompanies the patient to the interview room, and shows him or her to a seat. After taking identifying data from the patient, the interviewer can tell the patient what he or she already knows. This approach avoids unnecessary mysteries and clears the way for action. Consider the following example:

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Psychiatric Interview: Introduction

Human behavior is multifaceted and complex. When it becomes dysfunctional because of environmental stressors or brain disease it can be mysterious and frustrating to the inexperienced clinician who must master the tasks of diagnosis and management. This is especially true of neurobehavioral disorders, which involve organically related changes in cognitive or emotional behavior that appear to fall between the boundaries of psychiatry and neurology. The clinician needs to be able to appreciate and assess the signs and symptoms of these neurobehavioral disorders with the same discernment as the more traditional physical syndromes, such as myocardial infarction or common infections.

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