IB WCS 33
SOMATIC PRESENTATION OF PSYCHIATRIC DISEASES
Prof P Lee
Psychiatry
Thu 26-09-02
LEARNING OBJ
- Develop a realistic perspective on the multi-causality of symptom presentation - usu. too narrow-minded, try to find out pathophysiology for symptom
- Understand the common underpinnings of psychological factors in affecting somatic presentations
- Aware of relevant psychiatric diagnoses used in classifying somatic presentations of psychiatric illnesses: DSM-IV, DSM-TR (update of DMS-IV), ICD
OUTLINE
- Concepts and Terminology
- Common Psychiatric Diagnostic Categories
- Clinical Examples
- Aetiology and Mechanisms
CONCEPTS AND TERMINOLOGY
TERMS IMPLYING OCCULT DISEASE
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)
Hypochondriasis
Neurosis: no longer used in classification; in touch with reality but afflicted with distress (eg. Anxiety, depression)
Nerves
Neurasthenia
Note: psychosis: Pt no longer in touch with reality (eg. Auditory hallucination, thought-broadcasting)
TERMS IMPLYING PSYCHOGENESIS
- Psychosomatic: previously psychosomatic illness - now, psychosomatic approach
- 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
- 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
- Somatoform
- Medically unexplained symptoms
- Functional symptoms
CURRENT CONCEPTS
- Psychosomatic approach
- Functional somatic symptoms
- 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
- F44: Dissociative (conversion) disorders: eg. Asterical field state: lost all memory of personal ID/ background; wander off and start a new life; Hx is a vacuum
- F45: Somatoform disorders: psych illness presenting as physical illnesses
- F48: Other neurotic disorders
- F54: Psychological and behavioural disorders associated with disorders or diseases classified elsewhere: not either/ or; both complicate each other (psych and behaviour complicate physical disorders). Eg. Pt with mastectomy, no recurrence of tumour, Pt subsequently developed intense fear about recurrence , called surgeon twice a day asking for reassurance, developed intense anxiety days before re-consultation with surgeon (start as physical problem and resulted in psych and behaviour problems)
- F68: Other disorders of personality and behaviour
DSM-IV
- 300.xx: Somatoform disorder
- 300.xx: Factitious disorders: deliberately fakes his symptoms for specific psychological gain; compensable
- 300.xx: Dissociative disorders
- 316: Other conditions that may be a focus of clinical attention: Psychological factors affecting physical disorders
- V65.2: Malingering: is not a psych disorder; rampant in ML cases; person deliberately feigns symptoms for specific concrete gains (eg. sick leave, disability allowance, compensation money)
SOMATOFORM DISORDERS (DSM-IV)
- Somatisation disorder
- Conversion
disorder
- 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)
- Hypochondriacal
disorder
- 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)
- Heart (cardiac neurosis)
- GIT (hiccough, dyspepsia, etc)
- LGIT (psychogenic flatulence, irritable bowel syndrome, diarrhoea gas syndrome)
- Respiratory (cough, hyperventilation)
- UG (micturition, dysuria)
- Other organ systems
If cannot find pathophysiology, look at psych reason
OTHER CONDITIONS
- Neurasthenia
- Factitious disorder
- Malingering
- 4. Elaboration of physical symptoms for psychological reasons (ICD-10)
- (Disorders of adult personality and disorders)
OTHER CONDITIONS THAT MAY BE A FOCUS OF CLINICAL ATTENTION - DSM-IV PSYCHOLOGICAL FACTORS AFFECTING MEDICAL CONDITIONS
Factors
- Mental
factors: how Pt makes sense of his symptoms, thinking processes involved
- Psychological
symptoms: anxiety, depression, panic - will affect Pt's presentation? Eg. Mask depression
- Personality
traits or coping style: alexithynic personality: no feeling (anger, frustration, happy) but these emotions translated into physical signs
- Maladaptive
health behaviours
- Stress
related physiological response
Psychological factors
- Adversely influence the course: when Pt not convinced of Dx, go Dr shopping
- Interfere with the treatment
- Constitute additional health risks: concurrent Tx
- 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
- A history of many physical complaints beginning before age 30 that occur over a period of time of several years and result in treatment being sought or significant impairment in social, occupational, and other important areas of functioning
- 4 Pain Symptoms
: history of pain related to at least 4 different sites or functions (eg. head, abdomen, back, joints, extremities, chest, rectum, during menstruation, during sexual intercourse, or during urination)
- 2 GI Symptoms
: Hx of at least 2 gastrointestinal symptoms other than pain (eg. nausea, bloating, vomiting other than during pregnancy, diarrhoea, intolerance of different foods)
- 1 sexual symptom
: History of at least one sexual or reproductive symptom other than pain (eg. sexual indifference, erectile or ejaculatory dysfunction, irregular menses, excessive menstrual bleeding, vomiting throughout pregnancy ® hyperemesis: sign of psychological dysfunctioning)
- 1 Pseudo-Neurological Symptom
: history of at least one symptom or deficit suggestive of a neurological condition not limited to pain (eg. conversion symptoms: impaired co-ordination or balance, paralysis or localised weakness, difficulty swallowing or lump in throat, aphonia, urinary retention, hallucinations, loss of touch or pain sensation, double vision, blindness, deafness, seizures; dissociative symptoms: e.g. amnesia, loss of consciousness other than fainting)
- Each symptom, after appropriate investigation, cannot be fully explained by a known general medical condition or the direct effects of a substance
- Where there is a general medical condition, the physical complaints or resulting social or occupational impairment are in excess of what would be expected from the history, physical examination, or laboratory findings
Undifferentiated Somatoform Disorder
- One or more physical complaints (e.g. fatigue, loss of appetite, gastrointestinal or urinary complaints)
- At least 6 months
- No organic aetiology that can account for the severity
Somatoform Automatic Dysfunction
- The symptoms are presented as if they were due to a physical disorder of a system or organ that is largely or completely under autonomic innervation or control, ie. the cardiovascular, gastrointestinal, or respiratory system
- 2 types
: (1) Complaints based upon objective signs of autonomic arousal (e.g. palpitations, sweating, flushing, tremor) (2) More idiosyncratic, subjective and non-specific symptoms (e.g. sensations of fleeting aches and pains, burns, heaviness, tightness, sensations of being bloated or distended)
- Evidence of psychological stress, or current problems or difficulties that appear to be related to the disorder (but not necessarily so)
- Criteria for diagnosis
: (1) Symptoms are persistent and troublesome (2) Additional subjective symptoms referred to a specific organ or system (3) Preoccupation with and distress about possibility of a serious (but often unspecified) disorder of the stated organ or system, which does not respond to repeated explanation and reassurance by doctors
HYPOCHONDRIASIS
- Preoccupation with fears of having, or the idea that one has, a serious disease based on the persons' misinterpretation of bodily symptoms
- Preoccupation persists despite appropriate medical evaluation and reassurance
- Belief is not of delusional intensity (delusion: unshakeable) whereas hypochondriacs are temporarily comforted by doctor
- The preoccupation causes clinically significant distress or impairment in social, occupational, other important areas of functioning
- Duration of disturbance > 6 months
PSYCHOLOGICAL MECHANISMS UNDERLYING SOMATIC PRESENTATIONS
How psych factors can aggravate/ perpetuate physical symptoms
BEHAVIOURAL
Functions to
- Maintain the preoccupation
- Keep patient's mind on illness-related matters
Examples
- Reassurance
seeking
- Checking bodily state
- Constant scanning for changes in body
- Avoidance
of activity: eg. Slight LBP, therefore avoid any activity, worsens back problem (vicious cycle)
- 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
- Misinterpretation of bodily sensations and signs: eg. Palpitation must mean an impending MI
- Undue focus
of attention on bodily responses: eg. If focus on walking, becomes disrupted; the harder to try to sleep, the more alert you become
- Effects of frightening illness-related imagery: eg. Have headache and imagine a BV about to burst
- Attitudes
and confirmatory bias: if you are anxious, you look for things that confirm (you ignore non-confirmatory evidence)
COMMON ASSUMPTIONS
- If I get an illness it would be untreatable
- Both sides of the body must be absolutely identical or there is something wrong
- Symptoms always mean something
- if I don't worry about my health, I am more likely to fall ill
- I have a high risk for
- If I have symptoms that I was not aware of before, then it must be something bad
PHYSIOLOGICAL
- Autonomic arousal
- Changes in breathing - hyperventilation
- Loss of fitness due to changes in activity patterns
- Caffeine, alcohol, other drugs
- Eg. High Court Judge repeatedly presented to A&E due to MI + breathlessness. Why? Entered chambers and anything happens, it will be 2 hours before anyone finds him. Poured coffee (caffeine + anxiety) caused palpitations -> intense fear -> hyperventilate -> chest pain due to intercostal m contraction. Opened window and hyperventilated more intensely -> felt faint -> rushed out and lay on ground
EMOTIONS
OTHER INFLUENCES
- Previous experience
- Dysfunctional assumptions
- critical incident/s
- Activation
of assumptions
- Negative
automatic thoughts/imagery
- Health related anxiety
N.B. Reciprocal nature of the interactions between physiological, behavioural, cognitive, and affective factors in symptom formation
CLINICAL EXAMPLES
DIAG: Panic Disorder
Perceived threat
Apprehension
Body sensations
Interpretation of sensations as catastrophic
Perceived threat etc
Vicious cycle: crescendo of fear
DIAG: Hypochondriasis
- Trigger (information, event, illness, image)
- Perceived threat
- Apprehension ( focus on body, physiol arousal, checking behaviour + reassurance seeking)
- Preoccupation with perceived alteration/ abnormality of bodily sensations/ state
- Interpretation of body sensations and/ or signs as indicating severe illness
- Perceived threat etc
Difference between Panic Disorder and Hypochondriasis - IMMINENCE
- Panic Disorder = now
- Hypochondriasis = in the future