CFB PSY03 Psychiatric Conditions In Medical Settings
Psychiatric conditions in medical settings refer to mental health disorders—such as delirium, depression, anxiety, and somatoform disorders—that arise in, coexist with, or complicate the presentation and management of general medical illnesses.
Psychiatric Conditions in Medical Settings
Lecture Map
This lecture, delivered by Dr. CW Law (Department of Psychiatry, QMH) for the Clinical Foundation Block, addresses the complex interface between physical medicine and psychiatry — a topic that every doctor will encounter regardless of specialty. The central thesis is that physical and psychiatric illness do not exist in silos; they interact bidirectionally, and failing to recognize this leads to missed diagnoses, iatrogenic harm, and poor patient outcomes.
The big idea: When a patient presents with both physical and psychiatric symptoms, there are seven distinct categories of interaction to consider (adapted from Lipowski 1967). This framework is the lecture's backbone and the most testable concept. [1]
- Systematically approach patients with co-existing physical and psychiatric symptoms using the Lipowski framework.
- Recognize psychiatric presentations of medical conditions (especially delirium and focal organic syndromes).
- Understand medical presentations of psychiatric conditions (somatization, somatic symptom disorder, illness anxiety disorder).
- Identify psychiatric side effects of common non-psychotropic medications.
- Differentiate somatic symptom disorder, factitious disorder, and malingering.
- Apply a compassionate, structured approach to patients with somatoform presentations.
- Diagnose depression in patients with chronic medical illness (five key points).
- This is a CFB Psychiatry lecture treated as GC-level material — high yield for MCQ/SAQ/Minicase.
- Past papers have tested: screening for depression in primary care [10], pseudodementia [11], panic disorder management [12], classification systems [13], and drug side effects.
- The overlap with medicine (delirium, epilepsy, drug side effects) makes this a favourite for integrated questions.
The approach to patients with co-existing physical and psychiatric symptoms uses seven categories (adapted from Lipowski 1967). This is the lecture's core framework and the most exam-relevant concept. [1]
| # | Category | Direction | Example from Lecture |
|---|---|---|---|
| 1 | Co-morbid independent medical & psychiatric conditions | Neither causes the other | Inter-ictal psychotic disorders + epilepsy; common organic cause leading to both |
| 2 | Psychiatric presentations of medical conditions | Medical → Psychiatric | Delirium, thyroid disease → mood symptoms, Wilson disease → psychosis |
| 3 | Psychological/psychiatric symptoms as reactions to medical conditions | Medical → Psychological | Learned helplessness in epilepsy, adjustment disorder after cancer diagnosis |
| 4 | Psychiatric side effects of medical treatment | Treatment → Psychiatric | Corticosteroids → mania/depression; L-dopa → psychosis |
| 5 | Medical presentations of psychiatric conditions | Psychiatric → Somatic | Somatic symptom disorder, conversion disorder ("pseudo-seizure") |
| 6 | Medical side effects of psychiatric treatment | Psychiatric Rx → Medical | Epileptogenic propensity of some psychiatric medications; metabolic syndrome from antipsychotics |
| 7 | Medical complications of psychiatric conditions | Psychiatric → Medical | Self-harm, malnutrition in anorexia, dehydration in psychosis |
Why This Framework Matters
This is not just an academic exercise. In clinical practice, the same patient can fall into multiple categories simultaneously. For example, a patient with epilepsy may have (1) inter-ictal psychosis [Category 1], (2) ictal psychiatric symptoms [Category 2], (3) learned helplessness from repeated seizures [Category 3], (4) depression from antiepileptic drugs [Category 4], (5) pseudo-seizures from conversion disorder [Category 5], and (6) seizures lowered by psychiatric medications [Category 6]. The lecture uses epilepsy as a running illustration precisely because it touches almost every category.
Category-by-Category Detailed Notes
Inter-ictal psychotic disorders and the possibility of a common organic condition leading to both epilepsy and psychiatric symptoms illustrate this category. [1]
Why this matters: Two conditions co-exist but one does not cause the other. However, their co-existence may not be coincidental — shared neurobiology (e.g., temporal lobe pathology) may predispose to both epilepsy and psychosis. This is important because treatment of one may affect the other (e.g., some antipsychotics lower the seizure threshold).
Clinical relevance:
- Patients with epilepsy have a higher prevalence of depression and psychosis than the general population, even inter-ictally.
- Always screen for psychiatric co-morbidity in chronic medical conditions and vice versa.
Category 2: Psychiatric Presentations of Medical Conditions
Organic causes of psychiatric symptoms can be classified by whether they cause global cognitive impairment vs. focal/specific symptoms, and whether they are acute/transient vs. chronic/persistent. [1]
| Acute/Transient | Chronic/Persistent | |
|---|---|---|
| Global cognitive impairment | Delirium | Dementia |
| Focal/specific symptoms | e.g., Complex partial seizure | e.g., Thyroid disease, Wilson disease |
- Global vs. Focal tells you the extent of brain involvement.
- Acute vs. Chronic tells you about reversibility and urgency.
- Delirium = medical emergency until proven otherwise. Dementia = progressive, often irreversible.
- Focal presentations are tricky because they can perfectly mimic primary psychiatric illness (e.g., hypothyroidism mimicking depression, Wilson disease mimicking psychosis).
Ictal and post-ictal psychiatric disorders are direct psychiatric presentations of epilepsy. [1]
- Ictal phenomena: During a seizure (especially complex partial seizures originating from the temporal lobe), patients may experience fear, déjà vu, depersonalization, hallucinations (olfactory, visual), automatisms, or altered consciousness that can be mistaken for a psychiatric episode.
- Post-ictal phenomena: After a seizure, patients may have confusion, psychosis, depression, or aggression lasting hours to days. Post-ictal psychosis typically occurs after a lucid interval following a cluster of seizures.
High Yield Clinical Pearl
Always ask "Could this psychiatric symptom be ictal or post-ictal?" in a patient with known epilepsy presenting with acute psychiatric change. An EEG during the episode may be diagnostic.
| Medical Condition | Psychiatric Presentation | Mechanism |
|---|---|---|
| Hypothyroidism | Depression, cognitive slowing, psychomotor retardation | ↓ Thyroid hormones → ↓ CNS metabolic activity [7] |
| Hyperthyroidism | Anxiety, irritability, mania, psychosis | ↑ Adrenergic sensitivity, ↑ CNS excitation [7] |
| Cushing syndrome | Depression (60-80%), mania, psychosis | Cortisol neurotoxicity to hippocampus |
| Wilson disease | Psychosis, personality change, cognitive decline | Copper deposition in basal ganglia and cortex |
| SLE (neuropsychiatric) | Psychosis, delirium, mood disorder | Autoantibodies, vasculitis, cytokines in CNS |
| Delirium (multifactorial) | Acute confusion, hallucinations, agitation | Disrupted neurotransmitter balance (↓ACh, ↑dopamine, cytokines) [5] |
Learned helplessness as a consequence of repeatedly experiencing unpredictable and unavoidable seizures (Weigartz et al. 1999). This includes fear of seizure, parental overprotection, stigma & discrimination, and deteriorated socioeconomic status & quality of life. [1]
Why this happens: When patients face a chronic, unpredictable medical condition, they develop psychological reactions that range from normal adjustment to frank psychiatric disorder. The concept of "learned helplessness" (Seligman's model) explains why patients exposed to uncontrollable adverse events develop passivity, depression, and anxiety — they learn that their actions have no effect on outcomes.
Clinical implications:
- This is an adjustment reaction — it is understandable in context but still warrants treatment if causing significant distress or functional impairment.
- In epilepsy specifically: fear of seizure → avoidance behaviours → social isolation → depression → worse seizure control (stress lowers seizure threshold) → vicious cycle.
- Parental overprotection in childhood epilepsy → impaired autonomy → poor self-efficacy → psychological morbidity in adulthood.
Category 4: Psychiatric Side Effects of Medical Treatment
Psychiatric side effects of antiepileptic medication and psychiatric complications after epileptic surgery illustrate this category. [1]
Possible psychiatric side effects of non-psychotropic drugs include: agitation/aggression, anxiety, delirium, cognitive impairment, depression, lethargy, suicidal ideation, mania, psychosis, and hallucination. [1]
This is a very high-yield topic for exams because medication lists are directly testable.
| Drug | Why It Causes Depression |
|---|---|
| L-dopa | Dopamine fluctuations; on-off phenomenon |
| Corticosteroids | HPA axis disruption, hippocampal toxicity |
| Antihypertensives (e.g., calcium channel blocker, reserpine) | Reserpine depletes monoamines (historical model of depression); CCBs mechanism less clear |
| Propranolol | Lipophilic β-blocker crosses BBB → CNS effects; ↓ noradrenergic tone |
| Phenobarbital | CNS depressant (GABAergic), also used as AED |
| Interferons | Pro-inflammatory cytokines → neuroinflammation → serotonin depletion |
| Oral contraceptives | Hormonal effects on mood regulation pathways |
| Drug | Why It Causes Mania |
|---|---|
| Corticosteroids | Can cause both depression AND mania — dose-dependent (high dose → mania more likely) |
| Anticholinergic agents | ↓ ACh → relative ↑ dopaminergic/noradrenergic tone |
| Isoniazid | MAO inhibition → ↑ monoamines |
This is a long and important list from the lecture:
| Drug Class | Examples | Mechanism |
|---|---|---|
| Anticholinergics & antihistamines | — | ↓ ACh → delirium/psychosis |
| Dopaminergic drugs | L-dopa, amantadine | ↑ Dopamine in mesolimbic pathway |
| Interferon | — | Neuroinflammation |
| Stimulants | — | ↑ Dopamine/noradrenaline |
| Corticosteroids | — | Multiple CNS effects |
| Anticonvulsants (high doses) | — | Paradoxical CNS effects |
| Sympathomimetics | Including OTC preparations | ↑ Catecholamines |
| Pain medications | Opioids | Mu-receptor effects on perception |
| Antibiotics | Ciprofloxacin | GABA-A antagonism |
| Antivirals | Anti-HIV medications | Various |
| Antimalarials | — | Neuropsychiatric toxicity |
| Anti-TB drugs | D-cycloserine, ethambutol, isoniazid | NMDA agonism (D-cycloserine), MAO inhibition (INH) |
| Antiarrhythmics, digitalis | — | Narrow therapeutic index → toxicity |
| Antineoplastics | Ifosfamide | Chloroacetaldehyde metabolite neurotoxicity |
Exam Trap
Corticosteroids can cause BOTH depression AND mania. Short courses at high doses are more likely to cause mania/psychosis; chronic use is more likely to cause depression. Don't assume "steroids = depression only."
High Yield
Remember that the lecture specifically lists reserpine under antihypertensives causing depression. Reserpine was historically the drug that led to the monoamine hypothesis of depression because it depletes monoamine stores — this is a classic exam fact.
Category 5: Medical Presentations of Psychiatric Conditions
This is the largest section of the lecture and covers somatization, somatic symptom disorder, illness anxiety disorder, factitious disorder, and malingering.
Medical presentations of psychiatric conditions can occur via: (A) Somatic symptoms as part of secondary symptoms of other psychiatric disorders (e.g., mood disorders, anxiety disorders, psychotic disorders, substance-related disorders, eating disorders), or (B) Psychiatric disorders with somatoform symptoms as the main presentation. [1]
Path A: Somatic symptoms secondary to another psychiatric disorder
- Depression → fatigue, pain, anorexia, weight loss, insomnia
- Anxiety → palpitations, chest tightness, breathlessness, GI symptoms, tremor
- Psychosis → bizarre somatic delusions (e.g., "my organs are rotting")
- Substance use → withdrawal symptoms, autonomic dysfunction
- Eating disorders → amenorrhea, electrolyte disturbance, osteoporosis
Path B: Somatoform symptoms as the main presentation
- Somatic symptom disorder
- Illness anxiety disorder / Hypochondriasis
- Conversion disorder (Dissociative disorder)
Somatization: Two Models [1]
The lecture presents two distinct models of how somatization works:
In this model, somatization acts as an amplifying perceptual style. The cycle is: Psychiatric disorder → Psychiatric symptoms → Amplifying perceptual style → Unexplained physical symptoms → Health care utilization. [1]
Why this matters: The patient genuinely perceives amplified bodily sensations. The psychiatric disorder (e.g., anxiety) heightens arousal, which increases attention to normal physiological signals, which are then interpreted as pathological. This is NOT the patient "making it up" — their perceptual threshold is genuinely lowered.
In this model, psychiatric symptoms are hidden behind psychological defenses, and only the unexplained physical symptoms emerge. The cycle is: Psychiatric disorder → Psychiatric symptoms → [blocked by psychological defenses] → Unexplained physical symptoms → Health care utilization. [1]
Why this matters: Here, the patient's psychological defenses (denial, repression, alexithymia) prevent the psychiatric symptoms from being consciously recognized, so the distress is expressed somatically instead. The patient presents to medical services with physical complaints because they genuinely do not experience or recognize the psychiatric symptoms.
Distinguishing the Two Models
Model 1 (Amplifying): Patient may acknowledge psychological distress alongside physical symptoms. Somatic symptoms are "additional." Model 2 (Masked): Patient reports NO psychological distress — only physical complaints. The depression/anxiety is "hidden." This is the harder clinical scenario and the more likely exam question.
Over 60% of depressed patients report chronic pain (Magni et al. 85, Ohayon & Schatzberg 10). One-third to one-half of patients presenting to pain clinics have a current major depression (Dersh et al. 06). The two conditions detrimentally affect each other in terms of recovery time and symptom duration, suggesting a synchronicity in symptom severity (IsHak et al. 18). [1]
Why this co-occurrence exists:
- Shared neurobiology: serotonin and norepinephrine pathways modulate both mood and pain perception (descending pain inhibitory pathways)
- This is why SNRIs (e.g., duloxetine, venlafaxine) are effective for both depression AND chronic pain
- Chronic pain → helplessness → depression; depression → ↓pain threshold → ↑pain perception → vicious cycle
In a primary care sample (N=2091), severe depression (6.7%), severe anxiety (8.0%), and severe somatization (9.5%) showed significant overlap. Only 2.3% had all three. There were substantial pairwise overlaps: depression-anxiety 3.4%, anxiety-somatization 4.4%, depression-somatization 1.6% (Lowe et al., 2008). [1]
Clinical implication: In primary care, these three conditions are not discrete entities — they overlap massively. This supports a transdiagnostic approach and explains why screening for one should prompt screening for the others.
Somatoform Disorders: Classification Across Systems [1]
The lecture provides a three-column comparison of DSM-5, ICD-10, and ICD-11 classifications for somatoform disorders. [1]
| DSM-5 | ICD-10 | ICD-11 |
|---|---|---|
| Somatic Symptoms & Related Disorders | Somatoform Disorders | Disorders of Bodily Distress and Bodily Experience |
| Somatic Symptom Disorder (300.82) — Specify: with predominant pain, persistent; Severity: mild/moderate/severe | Somatization disorder (F45.0, F45.1); Persistent somatoform pain disorder (F45.4) | Bodily Distress Disorder (6C20) — Mild/Moderate/Severe |
| Illness Anxiety Disorder (300.7) | Hypochondriacal disorder (F45.2) | Hypochondriasis (6B23) — now classified under Obsessive-compulsive or related disorder |
Key Exam Point
In ICD-11, hypochondriasis has been moved from somatoform disorders to obsessive-compulsive and related disorders. This reflects the understanding that hypochondriasis involves repetitive, intrusive health-related thoughts and checking behaviours that are phenomenologically similar to OCD. This is a high-yield classification change.
Somatic Symptom Disorder is:
- More common in women
- Chronic but fluctuating course that rarely remits completely
- Propensity for doctor shopping
- Risk of iatrogenic complications from numerous tests, procedures, and medications
- Potential of drug misuse (narcotic analgesic, benzodiazepines)
- Common to have co-morbid Axis I diagnosis (depression, dysthymia, anxiety disorders, substance abuse/dependence) as well as Axis II diagnoses (underlying personality difficulties) [1]
Important DSM-5 shift: Unlike the old DSM-IV somatization disorder which required symptoms to be "medically unexplained," DSM-5 SSD focuses on the disproportionate thoughts, feelings, and behaviours related to somatic symptoms — the patient may actually have a real medical condition but their response to it is excessive. This is a conceptual evolution worth knowing for exams.
Illness Anxiety Disorder is:
- Equally common in men and women
- Patients are easily alarmed about personal health status
- Normal or commonplace sensations and appearances are often interpreted as abnormal and distressing
- Distorted belief that good health is a relatively symptom-free state, and that symptoms mean disease (Barsky et al. 1993)
- The belief is NOT of delusional intensity [1]
Why "not delusional intensity" matters: If the health belief IS of delusional intensity (unshakeable, bizarre, no insight), you should consider delusional disorder, somatic type — a completely different diagnosis with different management (antipsychotics vs. CBT/SSRI).
This is a directly testable table from the lecture. [1]
| Feature | Somatic Symptom Disorder | Factitious Disorder | Malingering |
|---|---|---|---|
| Insight that physical symptoms are related to psychological factors | None; Unconscious process | None; Unconscious process | Not applicable; Conscious process |
| Illness behaviour | Feels ill; Unconscious process | Feels ill; Conscious process (intentional) | Does not feel ill; Conscious process — Pretends to look ill |
| Motivation | To assume sick role | To assume sick role | Secondary gain (e.g., retreat from responsibility, acquiring controlled substances, food, shelter, compensation) |
How to Remember This
SSD: The patient genuinely suffers; the process is entirely unconscious. They are not faking.
Factitious disorder (Munchausen syndrome): The patient deliberately produces or feigns symptoms, but the motivation is to assume the "sick role" — they WANT to be a patient. There is no external gain. The illness behaviour is conscious but the motivation is psychological (not rational).
Malingering: The person consciously fabricates symptoms for a clear external incentive (money, avoiding jail, getting drugs). This is NOT a psychiatric diagnosis — it is a behaviour.
Key discriminator for exams: Ask "Is the symptom production conscious?" and "Is there external gain?"
- Conscious + No external gain = Factitious
- Conscious + External gain = Malingering
- Unconscious + No external gain = SSD
The lecture outlines four levels of mechanisms maintaining somatization: [1]
| Level | Mechanisms |
|---|---|
| Physiological | Autonomic arousal, muscle tension/pain, hyperventilation, sleep disturbances |
| Psychological | Beliefs about causes behind physiological symptoms, mood, personality factors (coping strategies, stress tolerance, emotion control) |
| Behavioural | Inactivity, frequent checking/increase in focus |
| Interpersonal | Reinforcing actions of relatives and friends, health care system, disability system |
Why this multi-level model matters: Treatment must target ALL levels — medication alone (targeting physiological) will fail if psychological beliefs, behavioural patterns, and social reinforcement are not addressed. This is the rationale for CBT + graded activity + system-level changes.
The Anxiety-Pain Relationship Cycle [1]
Pain → Fear → Misattribution and magnification → Somatic focus → Impaired cognitive functioning → Avoidance of activity → Inactivity → Deconditioning → Weakness → [back to] Pain [1]
This is a classic fear-avoidance model applied to somatization:
- Pain occurs (whether organic or functional)
- Fear of the pain → catastrophic thinking ("this must be serious")
- Misattribution of benign sensations → somatic focus
- Cognitive resources consumed by somatic monitoring → impaired functioning
- Avoidance of activity → physical deconditioning → muscles weaken
- Deconditioning itself causes MORE pain → cycle perpetuates
Treatment implication: Breaking the cycle at multiple points — CBT for misattribution/magnification, graded exercise for deconditioning, and anxiolytics/antidepressants for the fear/anxiety component.
This is the most clinically practical and examable section of the lecture.
Point 1: Some symptoms of medical illness could resemble those of depression — fatigue, anorexia, weight loss, insomnia, weakness, diminished concentration. Also consider hypoactive delirium and medication/treatment adverse effects. [1]
Why this is tricky: In a patient with cancer receiving chemotherapy, fatigue and anorexia are expected. You cannot use these symptoms alone to diagnose depression. The lecture implicitly suggests using cognitive and emotional symptoms (guilt, worthlessness, hopelessness, anhedonia, suicidality) rather than somatic symptoms for diagnosis in this context. This approach is supported by the Endicott substitution criteria.
Point 2: Physical suffering and disability may diminish the capacity to experience pleasures in formerly enjoyable activities. Depressed mood or withdrawal DISPROPORTIONATE to disability could be a hint. [1]
Key discriminator: A patient with severe COPD who can't go hiking anymore has a reason for reduced enjoyment. But if they also have no interest in watching their favourite TV show, talking to family, or eating their favourite food — activities their disability does NOT prevent — that's disproportionate anhedonia suggesting depression.
Point 3: Desire for death vs. adaptive death acceptance in terminally ill patients. Active suicidal ideation is ALWAYS an alarming sign. [1]
Why this is nuanced: In palliative care, some patients peacefully accept approaching death — this is psychologically healthy and adaptive. But active suicidal ideation ("I want to end it now," "I wish someone would kill me," planning means) is NEVER "normal" and always warrants psychiatric assessment, even in terminal illness.
Point 4: Difficulty in determination of "hopelessness," "worthlessness," and "guilty feeling" as depressive symptoms. Look for distorted thinking (e.g., maximization & catastrophic thoughts, over-generalization). "Hopelessness" is not absolute — e.g., still hope for being with family, hope for symptom alleviation. [1]
Clinical application: A patient with terminal cancer saying "there's no hope for a cure" is stating a fact, not expressing depressive hopelessness. But if they say "there's no point in anything, my family would be better off without me, everything I've ever done was worthless" — these are cognitive distortions suggesting depression. The lecture teaches you to look for the distortion pattern, not just the word "hopeless."
Point 5: Depressive symptoms may manifest in atypical or masked forms, e.g., amplification of somatic symptoms, non-compliance with or refusal of medical treatment. [1]
Why this is critical: A medically ill patient who suddenly becomes non-adherent to treatment may not be "difficult" or "in denial" — they may be depressed. Depression saps motivation, energy, and hope, making the effort of treatment seem pointless. Always screen for depression when a previously compliant patient starts refusing treatment.
Pseudodementia — The Classic Exam Trap
Depression in the elderly can mimic dementia (depressive pseudodementia). Past paper Q24 (2020) directly tests this: "Which psychiatric condition can mimic dementia and is known as 'pseudodementia' in a geriatric patient?" Answer: Depressive disorder. [11] Key differences: pseudodementia has relatively acute onset, patients often complain about cognitive problems (dementia patients may not), "don't know" answers are common (vs. confabulation/near-miss answers in dementia), and it responds to antidepressant treatment.
"Pseudo-seizure" (dissociative/conversion disorder) is an example of a medical presentation of a psychiatric condition. [1]
Pseudo-seizures (Psychogenic Non-Epileptic Seizures / PNES):
- Episodes that resemble epileptic seizures but have NO electrophysiological correlate on EEG
- Arise from psychological mechanisms (dissociation, conversion)
- Key clinical features distinguishing PNES from epileptic seizures:
| Feature | Epileptic Seizure | PNES |
|---|---|---|
| Duration | Usually < 2 min | Often > 2 min, can be prolonged |
| Eyes | Often open | Often closed (important discriminator) |
| Movements | Stereotyped, rhythmic | Asynchronous, waxing-waning |
| Post-ictal confusion | Present | Usually absent or brief |
| Tongue biting | Lateral tongue biting | Tip of tongue biting (if any) |
| Incontinence | Common | Less common |
| Prolactin (post-ictal) | Raised | Normal |
| EEG (ictal) | Epileptiform activity | Normal |
Important: Up to 10-30% of patients referred to epilepsy centres for refractory seizures actually have PNES. Some patients have BOTH epilepsy and PNES — this is the most challenging scenario.
Consideration of the epileptogenic propensity of some psychiatric medications. [1]
| Psychiatric Drug | Seizure Risk | Notes |
|---|---|---|
| Clozapine | HIGH (dose-dependent) | Most epileptogenic antipsychotic; EEG changes in up to 50% |
| Chlorpromazine | Moderate | Low-potency typical antipsychotic |
| Bupropion | Moderate (dose-dependent) | Risk ↑ above 450mg/day |
| TCAs (e.g., clomipramine) | Moderate | More than SSRIs |
| Lithium | Low-moderate | At toxic levels |
| SSRIs | LOW | Generally safe in epilepsy |
| Haloperidol | LOW | High-potency typical antipsychotic |
Other medical side effects of psychiatric treatment (from supporting context [8]):
- Antipsychotics: Weight gain (olanzapine, clozapine > risperidone > quetiapine), metabolic syndrome, QTc prolongation, hyperprolactinemia, extrapyramidal symptoms, NMS
- Lithium: Nephrogenic diabetes insipidus, hypothyroidism, hypercalcemia, tremor, renal impairment [9]
- Antidepressants (TCAs): Anticholinergic effects, cardiac conduction abnormalities, weight gain
- Antidepressants (SSRIs): Serotonin syndrome, hyponatraemia (SIADH), GI bleeding (esp. with NSAIDs)
- Valproate: Weight gain, teratogenicity, hepatotoxicity, pancreatitis, thrombocytopenia [8]
While the lecture mentions this category in the framework, it does not elaborate extensively. Key examples include:
- Eating disorders: Electrolyte disturbances (hypokalaemia → arrhythmia), osteoporosis, amenorrhoea, dental erosion, Mallory-Weiss tear, cardiac failure
- Substance use disorders: Liver disease, pancreatitis, cardiomyopathy, Wernicke-Korsakoff syndrome
- Severe depression/psychosis: Self-neglect → malnutrition, dehydration
- Self-harm/suicide: Physical injuries, overdose toxicity
- Catatonia: DVT, rhabdomyolysis, aspiration pneumonia
Approach to Patients with Somatoform Presentations [1]
The lecture provides a comprehensive management framework that is highly testable:
1. Appreciate that the symptoms are REAL to the patient [1]
2. Provide a positive explanation, including how behavioural, psychological, and emotional factors may exacerbate physiologically based somatic symptoms [1]
3. Offer opportunity for discussion of their worries [1]
4. Identify and treat mood or anxiety disorder [1]
5. Protect patients from iatrogenic problems [1]
6. Minimize polypharmacy [1]
7. Provide specific treatment when indicated [1]
8. Discuss and agree a treatment plan [1]
9. Reduce your expectation of cure and instead aim for containment and damage limitation [1]
10. Change social dynamics [1]
11. Encourage return to normal activity and work (coping and not curing) [1]
12. Recognize and control negative reactions, beware of counter-transference [1]
Counter-Transference Warning
"Recognize and control negative reactions, beware of counter-transference." Somatizing patients frequently evoke frustration, dismissiveness, and hostility in doctors ("there's nothing wrong with you"). This counter-transference can lead to:
- Dismissing real medical pathology (patients with somatization DO get real diseases)
- Over-investigating to "prove there's nothing wrong" (iatrogenic harm)
- Abandoning the patient (therapeutic rupture)
The lecture explicitly warns about this because it's a common pitfall and an OSCE trap — examiners watch for how you handle "difficult" patients.
| Principle | Practical Application |
|---|---|
| Symptoms are REAL | Never say "it's all in your head." Validate the experience. |
| Positive explanation | "Your body's stress response system is working overtime, causing real physical sensations." |
| Treat comorbid psychiatric disorder | Screen for depression/anxiety → SSRI/SNRI, CBT |
| Protect from iatrogenesis | Avoid unnecessary investigations, procedures, opioids |
| Minimize polypharmacy | Review all medications at each visit |
| Containment, not cure | Regular scheduled follow-up (NOT "come back if symptoms persist") |
| Encourage activity | Graded return to work/function; avoidance perpetuates disability |
| Change social dynamics | Address family reinforcement, disability benefits, secondary gain |
Delirium is the most important Category 2 example and is tested heavily in past papers.
DELIRIUM mnemonic from senior notes [5]:
- D = Drugs
- E = Electrolytes, Ears and Eyes
- L = Low oxygen
- I = Infection
- R = Retention (urine or faeces)
- I = Ictogenic (seizures)
- U = Underhydration or Undernutrition
- M = Metabolic (especially glucose)
DSM-5 criteria for delirium [5]:
- A: Disturbance in attention AND awareness
- B: Develops over short period (hours to days), fluctuates
- C: Additional cognitive disturbance (memory, orientation, language, visuospatial, perception)
- D: Not explained by another neurocognitive disorder, not in coma
- E: Evidence of medical cause, substance intoxication/withdrawal, or toxin exposure
Exam Intelligence
| Question Type | Example Stem | What They're Testing |
|---|---|---|
| MCQ | "A patient on corticosteroids develops euphoria and grandiosity. Most likely diagnosis?" | Category 4: Drug-induced mania |
| MCQ | "Which condition mimics dementia in the elderly?" | Pseudodementia (depression) [11] |
| SAQ | "List 4 differential diagnoses for fatigue in primary care" | Including psychiatric causes [10] |
| SAQ | "Name 2 screening questions for depression" | PHQ-2 type questions [10] |
| SAQ | "Differentiate SSD from factitious disorder from malingering" | The three-way table |
| Minicase | "Patient with chronic pain, normal investigations, multiple doctor visits" | SSD approach |
| Minicase | "Patient with epilepsy develops psychiatric symptoms" | Categories 1-6 of Lipowski framework |
| OSCE | "Explain to patient why their symptoms are real but not from a serious disease" | Positive explanation, empathy |
- Forgetting that SSD patients CAN have real medical conditions — DSM-5 no longer requires symptoms to be "medically unexplained"
- Confusing factitious disorder with malingering — the discriminator is motivation (sick role vs. external gain), NOT consciousness of symptom production (both are conscious)
- Attributing all somatic symptoms to depression without considering that the medical illness itself causes similar symptoms
- Thinking "desire for death" in terminal illness = suicidality — adaptive death acceptance is different from active suicidal ideation
- Forgetting Category 7 (medical complications of psychiatric conditions) when asked about the Lipowski framework
- Not screening for depression when a patient becomes non-compliant with medical treatment
- 2018 SAQ Q10: Fatigue in primary care — requires listing psychiatric differential diagnoses and depression screening questions [10]
- 2020 MCQ Q24: Pseudodementia — depression mimicking dementia [11]
- 2021 Minicase Case 3: Panic disorder after physical trauma — psychiatric symptoms in reaction to medical event [12]
- 2021 SAQ Q3: Psychiatric classification systems and differential diagnosis for low mood + anxiety [13]
- 2024 MCQ Q14: Postpartum mood disturbance — differentiating postpartum depression from baby blues from puerperal psychosis [14]
Q1 (SAQ style): A 55-year-old man with chronic renal failure on haemodialysis presents with fatigue, poor concentration, insomnia, and weight loss. How would you determine whether he has comorbid depression? (4 marks)
Markscheme:
- Recognize that fatigue, poor concentration, insomnia, and weight loss can be caused by CKD/dialysis itself (Point 1 from lecture)
- Focus on cognitive/emotional symptoms: depressed mood disproportionate to disability, anhedonia for activities still possible, guilt, worthlessness, suicidal ideation
- Screen for active suicidal ideation (always an alarming sign — Point 3)
- Look for masked depression: non-compliance with dialysis, amplified somatic complaints (Point 5)
Q2 (MCQ style): Which of the following best differentiates factitious disorder from malingering? A. Factitious disorder involves unconscious symptom production B. Malingering is associated with the desire to assume the sick role C. Factitious disorder is motivated by assuming the sick role while malingering is motivated by external gain D. Factitious disorder patients do not feel ill
Answer: C — Both involve conscious symptom production. The discriminator is motivation: sick role (factitious) vs. secondary gain (malingering).
Q3 (SAQ style): Name the seven categories in the Lipowski framework for co-existing physical and psychiatric symptoms. (7 marks)
Markscheme: One mark each for:
- Co-morbid independent medical & psychiatric conditions
- Psychiatric presentations of medical conditions
- Psychological/psychiatric symptoms as reactions to medical conditions
- Psychiatric side effects of medical treatment
- Medical presentations of psychiatric conditions
- Medical side effects of psychiatric treatment
- Medical complications of psychiatric conditions
High Yield Summary
The Lipowski 7-category framework is the backbone of this lecture: (1) Co-morbid independent conditions, (2) Psychiatric presentations of medical conditions, (3) Reactions to medical conditions, (4) Psychiatric SE of medical Rx, (5) Medical presentations of psychiatric conditions, (6) Medical SE of psychiatric Rx, (7) Medical complications of psychiatric conditions.
Diagnosing depression in chronic medical illness: Use 5 key points — (1) medical symptoms mimic depression, (2) anhedonia disproportionate to disability is a clue, (3) distinguish adaptive death acceptance from active suicidality, (4) look for cognitive distortions not just "hopelessness," (5) non-compliance may be masked depression.
SSD vs. Factitious vs. Malingering: SSD = unconscious, genuinely feels ill, sick role. Factitious = conscious production, genuinely feels ill, sick role. Malingering = conscious, does not feel ill, external gain.
Drug-induced psychiatric symptoms: Steroids → mania or depression. L-dopa → psychosis. Reserpine → depression. Interferon → depression/psychosis. Anticholinergics → delirium/mania.
Approach to somatization: Validate symptoms as real, positive explanation, treat comorbid mood/anxiety disorders, protect from iatrogenesis, aim for containment not cure, beware counter-transference.
Active Recall - Psychiatric Conditions in Medical Settings
[1] Lecture slides: CFB (PSY03) Psychiatric conditions in medical settings.pdf (all pages) [2] Senior notes: Ryan Ho Psychiatry.pdf (p.28, p.124, p.150, p.163) [3] Senior notes: Ryan Ho Fundamentals.pdf (p.325 — Delirium) [4] Senior notes: Ryan Ho Neurology.pdf (p.94-95 — Delirium, consciousness disorders) [5] Senior notes: MBBS Final MB (Medicine) (Felix PY Lai).pdf (p.1131-1135 — Delirium) [6] Senior notes: Ryan Ho GI.pdf (p.118 — IBS and somatization comorbidity) [7] Lecture slides: General Clerkship-Psychiatric Assessment Skills Training-Learning Materials 2024_3 Sep.pdf (p.13 — thyroid and psychiatric DDx) [8] Senior notes: Block A - I am overweight, doctor_ obesity; Hyperlipidaemia.pdf (p.8 — psychiatric drugs causing weight gain) [9] Senior notes: Block A - Two cases of polyuria and polydipsia.pdf (p.5 — lithium side effects) [10] Past papers: 2018 Fourth Summative SAQ.pdf (p.5 — Q10 fatigue and depression screening) [11] Past papers: 2020 Fourth Summative Assessment MCQ paper.pdf (p.9 — Q24 pseudodementia) [12] Past papers: 2021 Fourth Summative Minicase.pdf (p.22 — Case 3 panic disorder) [13] Past papers: 2021 Fourth Summative SAQ.pdf (p.4 — Q3 psychiatric classification) [14] Past papers: 2024 Fourth Summative MCQ.pdf (p.6 — Q14 postpartum depression)
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