IB WCS 33

SOMATIC PRESENTATION OF PSYCHIATRIC DISEASES

Prof P Lee

Psychiatry

Thu 26-09-02

LEARNING OBJ

OUTLINE

  1. Concepts and Terminology
  2. Common Psychiatric Diagnostic Categories
  3. Clinical Examples
  4. Aetiology and Mechanisms

CONCEPTS AND TERMINOLOGY

TERMS IMPLYING OCCULT DISEASE

  1. Hysteria: Pt too dramatic; Dx of hysterical conversion (eg. Most common during 2 WW's in shoulders - aka combat neurosis, avoidance-avoidance conflict (chance of death in war vs. deserting army + court marshal), cannot decide which should be chosen, therefore develop sickness (eg. Paralysis of arm - can no longer lift arm to pull trigger - therefore removed from avoidance-avoidance conflict)
  2. Hypochondriasis
  3. Neurosis: no longer used in classification; in touch with reality but afflicted with distress (eg. Anxiety, depression)
  4. Nerves
  5. Neurasthenia

Note: psychosis: Pt no longer in touch with reality (eg. Auditory hallucination, thought-broadcasting)

TERMS IMPLYING PSYCHOGENESIS

  1. Psychosomatic: previously psychosomatic illness - now, psychosomatic approach
  2. Somatisation: psych (eg. upset about exam results) manifested as physical complaints (eg. Diarrhoea). Common in elderly - eg. Mask depression - c/o weakness/ pain, but these symptoms are part of a depressive disorder. In people who are not in touch with their emotions
  3. Abnormal illness behaviour: maladaptive coping

OTHER TERMS

Dx in psych: does not imply that cause in known; Dx used so clinicians can communicate with each other

  1. Somatoform
  2. Medically unexplained symptoms
  3. Functional symptoms

CURRENT CONCEPTS

  1. Psychosomatic approach
  2. Functional somatic symptoms
  3. Specific psychiatric diagnosis

DSM-IV: "there is much "physical" in "mental" disorders and much "mental "in "physical" disorders"

RELEVANT PSYCHIATRIC DIAGNOSTIC NOSOLOGY

Highlights relevant chapters only

ICD-10

DSM-IV

SOMATOFORM DISORDERS (DSM-IV)

  1. Somatisation disorder
  2. Conversion disorder
  3. Pain disorder: organic findings do not account for complaints of pain; severe distress + significant role impairment (eg. Slip and bruise leg, but not cannot walk properly etc, cannot work full-time)
  4. Hypochondriacal disorder
  5. Body dysmorphic disorder: delusional conviction that parts of body are not aligned/ in balance for one another (eg. Cosmetic surgery underwent willingly to realign jaw, cannot eat for months, then Pt wants to return to original self (convinced that jaw still misaligned), subsequently developed severe depression + suicidal tendencies

Be careful when performing elective surgery!

SOMATOFORM AUTONOMIC DISORDER (ICD-10)

  1. Heart (cardiac neurosis)
  2. GIT (hiccough, dyspepsia, etc)
  3. LGIT (psychogenic flatulence, irritable bowel syndrome, diarrhoea gas syndrome)
  4. Respiratory (cough, hyperventilation)
  5. UG (micturition, dysuria)
  6. Other organ systems

If cannot find pathophysiology, look at psych reason

OTHER CONDITIONS

  1. Neurasthenia
  2. Factitious disorder
  3. Malingering
  4. 4. Elaboration of physical symptoms for psychological reasons (ICD-10)
  5. (Disorders of adult personality and disorders)

OTHER CONDITIONS THAT MAY BE A FOCUS OF CLINICAL ATTENTION - DSM-IV PSYCHOLOGICAL FACTORS AFFECTING MEDICAL CONDITIONS

Factors

  1. Mental factors: how Pt makes sense of his symptoms, thinking processes involved
  2. Psychological symptoms: anxiety, depression, panic - will affect Pt's presentation? Eg. Mask depression
  3. Personality traits or coping style: alexithynic personality: no feeling (anger, frustration, happy) but these emotions translated into physical signs
  4. Maladaptive health behaviours
  5. Stress related physiological response

Psychological factors

  1. Adversely influence the course: when Pt not convinced of Dx, go Dr shopping
  2. Interfere with the treatment
  3. Constitute additional health risks: concurrent Tx
  4. Stress-related physiological responses precipitate or exacerbate symptoms of a general medical condition (eg. M tightness (as pain), sweating, palpitations)

SOMATISATION DISORDER

These Pt's difficult to deal with and very troublesome; poor Tx. Avoid over-Tx. Structure their health-seeking behaviours

Undifferentiated Somatoform Disorder

Somatoform Automatic Dysfunction

HYPOCHONDRIASIS

PSYCHOLOGICAL MECHANISMS UNDERLYING SOMATIC PRESENTATIONS

How psych factors can aggravate/ perpetuate physical symptoms

BEHAVIOURAL

Functions to

  1. Maintain the preoccupation
  2. Keep patient's mind on illness-related matters

Examples

  1. Reassurance seeking
  2. Checking bodily state
  3. Constant scanning for changes in body
  4. Avoidance of activity: eg. Slight LBP, therefore avoid any activity, worsens back problem (vicious cycle)
  5. Effects of rubbing or irritating affected areas (eg. Fear of MI, therefore always check pulse, but anxious therefore pulse increases, vicious cycle)

Eg. AIDS fear: had tooth pulled at cheap dentist, worried about contracting AIDS. Perpetuated by behaviour: going to donate blood, waiting to be rejected due to imagined HIV status. Then constantly checked LN's, became so tender he was positive he had the disease. Worried about passing to family: ate along, no intercourse with wife

COGNITIVE

COMMON ASSUMPTIONS

PHYSIOLOGICAL

EMOTIONS

OTHER INFLUENCES

N.B. Reciprocal nature of the interactions between physiological, behavioural, cognitive, and affective factors in symptom formation

CLINICAL EXAMPLES

DIAG: Panic Disorder

  1. Perceived threat
  2. Apprehension
  3. Body sensations
  4. Interpretation of sensations as catastrophic
  5. Perceived threat etc

Vicious cycle: crescendo of fear

DIAG: Hypochondriasis

  1. Trigger (information, event, illness, image)
  2. Perceived threat
  3. Apprehension (­ focus on body, physiol arousal, checking behaviour + reassurance seeking)
  4. Preoccupation with perceived alteration/ abnormality of bodily sensations/ state
  5. Interpretation of body sensations and/ or signs as indicating severe illness
  6. Perceived threat etc

Difference between Panic Disorder and Hypochondriasis - IMMINENCE