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Thursday, April 11, 2019

Diagnostic Principles


By: Henry Kellerman and Anthony Burry

The principles that enable the psychologist to formulate a condensed and meaningfully presented diagnostic summary are discussed here. The value of a distilled, diagnostic statement is that it encapsulates the patient’s functioning and the role the presenting symptom complaint plays in the patient’s overall personality structure. Clarification of the role of the symptom complaint relates the diagnostic assessment to the presenting problem that gave impetus to the referral for psychological testing in the first place.


A well-formulated, meaningful diagnostic statement summarizes the patient’s functioning, problems, and strengths in a manner that indicates the nature of the disorder and potentials that exist for change. The identification of such possibilities for change can lead to the purposeful design of intervention strategies that sensibly and systematically relate to diagnostic findings.

In addition, a carefully formed diagnostic analysis, along with its implications for appropriate intervention, present the opportunity to evaluate the patient’s prognosis. Thus, the diagnosis leads to a prognostic assessment. Just as the diagnosis presents the patient’s total functioning in an encapsulated framework, the prognostic statement indicates what sort of change, growth, repair, or even deterioration may be possible or likely.

Because the prognosis for the patient and the choice of intervention are so dependent on implications contained in the diagnostic assessment, a careful analysis of the structure of diagnosis is of primary importance.

Elements of Diagnosis

The formulation of a diagnosis for the patient who has been tested brings together a complex array of several thematic and structural elements that the psychological analysis has served to clarify throughout the report. In addition, these features of the patient’s personality have to be considered along with factors that are implied by the diagnosis itself.

For example, some diagnostic conditions are chronic, and others tend to be more transient in their effects. Some diagnostic states involve deeper, more serious pathology; others reflect superficial disturbances. A number of diagnostic categories are inherently fluid and changeable while others tend to be crystallized and rigid. The former are more amenable to modification and the latter tend to be recalcitrant to efforts toward change.

Similarly, the presenting problem may be superficial within the personality or it may represent more profound, long-term ramifications. An additional feature about the phenomenon of diagnosis is that the reporting of different levels of pathology may be the most effective way to compose a diagnosis.

As can be seen, diagnosis involves several interconnected features, including the following:

• The potential for shift within any diagnostic formulation; • The relationship between the presenting problem and the overall diagnosis of the personality; • The presenting problem as an onset phenomenon that bears on the acute versus chronic dimension of pathology; • The presence of various levels of pathology and their interconnections; • The impact of these diagnostic features on the development of intervention strategies and prognostic formulations.

Diagnosis as a Shifting Phenomenon

It should be noted that the diagnosis is formulated at a specific point in the patient’s life. This raises the implication that, in certain cases, the diagnosis may represent only a temporary or time-limited statement about the patient; thus, it can be a shifting phenomenon. Examples of diagnostic shift are the incipient, emerging psychosis or, conversely, the psychosis proceeding toward remission in which a relatively stable characterology emerges. An additional example is the change in character type that follows psychotherapeutic treatment. This example also reflects the fact that diagnosis may be an evolving phenomenon.

There also are instances in which fluidity and shifts in diagnosis are less likely to occur or may not occur at all. The most striking example of this diagnostic inflexibility may be the profoundly organically impaired patient. Even in this case, however, psychological elements related to the patient’s comfort and maximal functioning can be enhanced within the limits of obvious pathology and, thus, be part of interventions involving change.

The persisting acting-out of some psychopathic or antisocial individuals may also be relatively unchanging; yet, a deeper analysis of overall personality functioning may provide opportunities for change. Therefore, reporting the potential for change with respect to the formulation of any diagnosis is an important contribution that the psychologist can make.

Connections Between Diagnosis and the Presenting Problem

One consideration the psychologist can make in a diagnostic formulation concerns the manner in which the presenting complaint is embedded in the context of the patient’s overall functioning. The importance of this portion of the diagnostic process results from the fact that the presenting disturbance is a sample of the underlying personality problem and both the symptom and underlying problem have contributed to the test referral.


The presenting symptom represents an outgrowth of psychological pressure in the person and may also reflect the difficulty imposed on the individual’s social network. Inherent vulnerabilities within the individual’s overall personality structure or a shift in an internal aspect of personality functioning provide the occasion of symptom development. Thus, the relationship between the presenting complaint and the diagnosis may be clarified by demonstrating certain linkages. The presenting symptom, the prognosis, and the choice of intervention may depend on the nature of the linkage between the structure and functioning of the overall personality and the outgrowth of the singular or apparently more limited presenting symptom.

For example, the complaint of sudden hyperactivity in a school-age child requires diagnostic delineation of the symptom based on its nature, consistency, context in which it appears, duration, and corresponding signs of disturbance. Clarity about the nature of the presenting problem is not fully useful, however, unless the nature of the personality disturbance that generates it is also understood. Consequently, the diagnosis is most useful when connected to the context of the presenting complaint. In the instance of a hyperactive student, the intervention and prognosis will mainly depend on the underlying personality problem to which the original symptom is tied and that it reflects in microcosm.

As one possibility, the hyperactivity may develop from a recent organic trauma such as one emanating from a head injury; it may stem from the crystallization of symptomatology deriving from underlying minimal brain damage that suddenly surfaces in response to increased demands for concentration and learning in school; it may be generated by an upset—a neurotic child’s silently furious and fearful reaction to a recent parental separation; or it may be a sign of an emerging psychosis in a child whose vulnerabilities have been stimulated by an increase in social pressure.

These examples are presented to alert the psychologist to the complexity and intricacy of any approach to diagnosis. A clearly understood link between the original, overt symptom at the behavioral or experiential level and the current diagnosis can create a more effective focus to the meaning of the symptoms, their purpose, the person’s potential for change, and an appropriate intervention. In a similar way, the choice of intervention strategy and consequent prognosis, which can include or combine medication, psychotherapy, or special educational placement, necessarily depends on clarification of the symptom’s connection to its underlying source.

Acute Versus Chronic Pathology

Another element that contributes to the formulation of the diagnosis is the duration of the symptom complaint. A determination needs to be made with respect to onset of the disturbing behavior, which then enables an assessment of the length of the individual’s difficulty and whether any precursors to this particular disturbance have previously appeared.

The importance of the duration of patterns of pathology is often tied to the seriousness of the diagnosis as well as to the prognostic optimism or guardedness. Generally speaking, the estimate of prognosis and depth of pathology in clinical disorders follows the same rule as in general medicine: acute disorders have better prognoses, and chronic disorders are more problematic and, therefore, more resistant to change.

For example, endogenous depression, in which a historically long-standing depressive mood exists without an obvious external precipitant, can suggest a poor prognosis. In contrast, the diagnosis of reactive depression—incorporated in DSM-IV as dysthymic disorder—indicates a depressive mood of relatively recent onset in which the symptom is directly tied to a specific traumatic event such as loss or injury. In such cases of recent onset, the depression is a reaction within the personality that is designed to allay panic and anxiety and allow the individual to gain time to cope with the problem. Under these circumstances of acute onset, prognosis is generally positive. When the traumatic event is not dealt with adaptively, however, the acute reaction can potentially develop into a more protracted depressive state.

Because, in the majority of instances, acute onset cases have a positive prognosis, the psychologist should be aware that when reactive depressions become chronic, a character structure that fosters crystallization of depressive features is sure to have existed beneath the surface. The underlying characterology may, for example, relate to needs for affection and dependency. The psychologist is, therefore, in a unique position to evaluate an acute symptom as well as long-term character trends which may complicate diagnosis of the acute problem. The coexistence of acute or reactive disturbances along with more enduring, underlying disorders reveals that there are various levels of functioning within the personality, and that the diagnostic formulation needs to reflect them.

Levels of Diagnosis

Usually, references to preliminary diagnosis were defined in broad terms as a fourfold system consisting of neurosis or anxiety disorder, character or personality disorder, psychosis, and organicity. This classification system should be considered a heuristic device that is empirically based; it permits conceptualizations appropriate to the formation of preliminary diagnostic hypotheses. As additional findings are further analyzed, refinements in diagnostic hypotheses are possible because more complex possibilities and combinations become apparent.

Once finer diagnostic considerations are reached, the fourfold classification model becomes a basis for a more complex diagnostic statement. This classification model is founded on clinical distinctions between the four major diagnostic categories.

The neurotic diagnoses or anxiety disorders are determined by the predominance of anxiety and symptoms related to anxiety.

The character or personality disorder diagnoses are based on the relative absence of anxiety and the prominent role of enduring maladaptive trait patterns.

The diagnoses involving psychoses are based on profound thinking or mood aberrations that interfere with fundamental reality testing.

Finally, the organic disorders are based on physical or neurophysiological traumas that underlie disturbances in personality functioning.

In addition to sorting diagnoses into categories, the psychologist can establish a theoretical and integrative network on the basis of the conventional and pragmatic catalogue of discrete diagnostic entities. One way to provide an integrative approach to diagnostic formulation is to consider pathology or aberration as a reflection of three levels of diagnosis.

The first of these diagnostic levels may take relatively external forms such as behavioral manifestations.

The second level of diagnosis involves internal phenomena such as deficits, anxiety, and idiosyncratic ideation or mood.

A third diagnostic level includes character structure, which is intermediate between the internal and external dimensions.

Integrating Diagnostic Levels

One constant in the personality and in the corresponding diagnostic component linked to it is the character structure. This is the relatively stable, enduring network of traits and dispositions that expresses the typical personality style or approach of any particular individual.

Because the presence of characterology is universal, it is appropriate to present, whenever possible, a diagnostic assessment that includes this level. If the psychologist consolidates the overall test results and summarizes the analyses throughout all the preceding sections of the report, the patient’s character formation can usually be specified.

The patient’s typical character formation exists regardless of the superficiality or depth of pathology. Consequently, an individual functioning at a neurotic or symptom level; a patient in a psychotic state; or an organically impaired person all possess, at a basic level of their personality, the quality of character or personality structure.

The importance of the characterological aspect of functioning makes it essential to specify its nature even if it is damaged or fragmented. On the basis of the analysis of character functioning throughout the report, and in connection with material relevant to character traits, on interpersonal behavior, the diagnostic impression most consistent with test results regarding the patient’s character style should be specified.

For example, a diagnosis of obsessive-compulsive personality disorder would reflect this level. If the findings additionally indicate the presence of neurotic or symptom phenomena, these can be considered to be components of the diagnostic formulation at a separate level. Such neurotic or symptom features can be specified in the diagnostic assessment that summarizes the totality of the patient’s pathological functioning.

In keeping with the previous illustration of the obsessive-compulsive personality disorder, if phobic disturbances also are reflected in test results, this anxiety-related level of diagnosis can become a diagnostic qualifier: the diagnosis becomes obsessive-compulsive personality disorder with phobic features. If, in addition, the test findings reported indicate the presence of a psychotic process or organic impairment, these levels of personality disturbance would also be encapsulated in the diagnostic assessment to elaborate further the summary of pathological functioning.

An integrative diagnostic formulation will also indicate qualitative features that add clarity and refinement to the summary description of the patient. In this way, the relative contribution made by each level toward personality functioning can be delineated.

The reader of the report can be informed in the diagnostic formulation if, for example, a psychotic process is chronic or acute, incipient and emerging, or progressing toward remission or residual status. The psychosis may be an underlying process in relation to the patient’s character structure, or it may be overt.

In addition, even if the character or personality structure is not fully intact, the specific nature of the characterological context that is impaired by a psychotic or organic process can be specified. If an organic impairment is found, it is useful to clarify whether it is mild or profound, acute or chronic. The characterological context in which the organic impairment occurs is essential to report, as is the presence of any neurotic symptoms that have appeared. This kind of specificity can have a significant bearing on prognosis and intervention.

For example, if a phobia or sexual impotence is linked to a symptom level of functioning in an organically impaired patient, quite different implications would be drawn than if these phenomena appeared to derive from the organicity itself. Any outstanding features that distinguish the diagnostic status of the patient can be added to the diagnostic statement.

This addition enables the diagnostic summary to reflect more accurately the major factors of personality functioning; for example, the addition of an indication of depressive features to any diagnostic formulation where this is appropriate.

Information concerning a subject’s alcohol abuse or drug addiction might also be appended in cases in which these involvements are known and have influenced the test results sufficiently to warrant reporting of associated findings.

The various kinds of added features that are linked to the diagnostic formulation may or may not be related to the original presenting complaint or symptom. Nevertheless, the summary of diagnostic levels and their integration affords a context in which the presenting problem that brought the patient into the referral sequence can be considered in depth.

The Pathological Context and Diagnosis

Because the patient was referred for testing and evaluation as a result of presenting complaints and the confusion surrounding them, it is logical to address the context of the presenting complaint when developing and formalizing the diagnostic summary. Simply restating the problem in diagnostic terms is not sufficient because it fails to enhance the explanatory power of the assessment and does not summarize the test findings.

For example, simply reporting alcohol abuse does not clarify any processes involved. Consequently, a diagnosis of the pathological context in which the presenting problem is embedded is a crucial part of the diagnostic effort. Thus, relating the presenting complaint to its pathological context is the logical conclusion to the entire report. This means that the essential diagnostic effort and conclusion by the psychologist will involve detailing the aspects of personality disturbance that relate to and clarify the presenting problem.

Alcoholism can serve as an example to indicate that a presenting problem needs to be embedded in a careful diagnostic formulation because it illustrates the way in which a symptom gains meaning through more careful assessment of the accompanying personality problems. The patient’s presenting complaint, drinking too much, may relate to underlying psychotic vulnerabilities, together with a pathological character structure. For instance, a characterological disturbance involving phenomena of dependency and passivity may lead to excessive reliance on drinking to reduce anxiety and attempt to retain integrity in personality functioning.

Alcohol intake may also be used by the patient as an anesthesia to mask an ongoing chronic experience of rage—by drinking, the patient is self-medicating the rage. Diagnosing the pathological character structure of the patient clarifies the role of the presenting complaint as a reflection of a specific personality conflict. Similarly, if there is an underlying psychotic process to which the dependent and passive characterology is affixed, this can also be useful in understanding the phenomenon of the presenting drinking problem. Thus, the personality context in which the presenting problem occurs is an important focus of diagnostic effort.

In relation to this example of a drinking problem as a presenting symptom, additional diagnostic factors may need to be considered. If the drinking continues for a period of years, an organic brain syndrome may result. The diagnosis of this syndrome, and its effects on the patient’s current functioning and prognosis, would be crucial in the diagnostic assessment that summarizes the findings of the psychological testing. This example illustrates the complexity of the context of disturbance that needs to be diagnosed in order to assess the patient’s pathology meaningfully and in such a way as to clarify the prognostic considerations.

Another example of a presenting problem that illuminates the complex relationships among levels of pathology that need to be diagnostically clarified is sexual impotence. As a conversion or somatized symptom, the problem of impotence in the male may simply be associated with the diagnosis of a conversion type of histrionic state. Or, impotence can be a derivative symptom of depression. Thus, the context of character formation that exists in the individual is also important in understanding the nature and role of this symptom.

Therefore, an assessment of the character structure would be essential to include in the diagnostic summary. For instance, this characterology may reveal the individual’s readiness to rely on withholding, passive-aggressive interpersonal traits, which is not only a compatible context for the conversion symptom of impotence, but also is helpful in revealing additional problems derived from character structure. In turn, these problems may reflect a more general kind of impotence such as an inability to complete projects, develop or advance a career, or achieve fulfillment in a wide range of endeavors.

Further, the passive-aggressive characterological context may reveal the motive to frustrate and assert individuality in a passive, covert way that provides additional meaning to the presenting impotence system. A phenomenon of depression may be either a consequence or contributing factor that is appropriate to diagnose as well.

Summary

The subtle interplay between symptoms and the various levels of personality disturbance were discussed here.

Whenever the interaction of these diagnostic dimensions becomes apparent from the results of testing, it is valuable for the psychologist to integrate them into the diagnostic formulation. Thus, it is frequently useful to detail the context of character in which symptoms occur, even clearly neurotic or anxiety level ones, as well as any underlying psychotic or organic phenomena.

It is beneficial to describe the interplay and joint occurrence of any or all of these diagnostic levels as they contribute to personality functioning. Such a formulation enables a clear appreciation of the complex connections that influence the appearance of symptomatology. The interplay between the various levels of personality, and the extent of the relative impact of each, contribute to the prognostic formulation as well as to a choice of intervention strategy. 

Diagnostic principles.


The elements of diagnosis include the following:
Diagnosis can shift: Character change can occur as a result of therapy intervention; symptoms can be alleviated; states of remission can be achieved; or pathology can intensify.
A relationship obtains between the presenting problem and the diagnosis: The presenting disturbance is usually an example in microcosm of the underlying personality problem.
Pathology may be acute or chronic: The duration of the symptom complaint is the key question. Generally, an acute diagnosis suggests a better prognosis.
There are levels of diagnosis: Diagnosis can refer to characterology, anxiety or neurotic symptoms, psychotic, and organic phenomena, as well as to any incipient pathological process. The prominence of any of these four levels also corresponds to the principle of the diagnostic shift. The levels of diagnosis should be integrated. This integration is made with reference to character
structure, anxiety disorders, or even underlying incipient psychotic states. The diagnosis can refer to:
• Behavioral manifestations;
• Internal phenomena involving deficits, anxiety, idiosyncratic ideation, and mood;
• Character structure—the enduring network of traits and dispositions of the personality;
• Psychotic or organic features.
The pathological context is related to diagnosis. The pathological process in which the presenting problem is embedded should constitute a major part of the diagnostic picture.

References

Henry Kellerman and Anthony Burry, Handbook of Psychodiagnostic Testing, Fourth Edition, 2007, Springer ScienceBusiness Media, LLC.

Read Also

A Combination Approach: The Diagnostic Assessment
Rationale and importance of case formulation
Preface to Case Formulation
Definitions of case formulation
Models of Treatment for Mental Disorder
Introduction to Classification of psychiatric disorders and their principal treatments
Validity of psychiatric diagnoses

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