Neurotic Disorders Flashcards
List different types of anxiety disorders
1) Phobic anxiety disorders
- Agoraphobia
- Social phobia
- Specific (isolated) phobias
2) Other anxiety disorders
- Panic disorders (episodic paroxysmal anxiety)
- Generalised anxiety disorder (GAD)
2) OCD
3) Reactions to severe stress and adjustment disorders
- Acute stress reaction
- PTSD
- Adjustment disorders
4) Dissociative (conversion) disorders
- Amnesia, stupor, motor, convulsions, trance and possession states, anaesthesia and sensory loss
5) Somatoform disorders
- Somatisation disorder
- Hypochrondriacial disorder
What is generalised anxiety disorder (GAD)?
A period of at least 6 months with prominent, tension, worry and feelings of apprehension about everyday events and problems
“Free floating” = not about ay particular situation (phobia) or episodic (panic disorder)
Causes significant distress / functional impairment
Is GAD more common in F or M? How common is it?
What age is affected?
F>M
3-4%
Early adulthood
Gradual onset
What is the pathophysiology of GAD?
Hyper-responsiveness of ANS, linked with:
- Loss of regulatory control of cortisol
- Prolonged corticotrophin releasing factor stimulation
- Neurotransmitter abnormalities (decreased GABA activity, 5HT dysregulation)
What is the aetiology of GAD?
Environment
- May be triggered by an environmental event or chronic stressors
- Drugs and alcohol misuse / withdrawal
Psychiatric disorders
- Mood disorders
- Psychotic disorders
- Eating disorders
Physical disorders
- Thyroid
- Cushing’s
Genetics (30% inheritability)
Psychological
- Unresolved childhood conflict and psychosexual development
- Displacement of subconscious fear, perpetuated by avoidance behaviour and negative reinforcement through fear reduction
What physical symptoms does GAD present with?
CV - palpitations, tachycardia, chest pain
GI - dry mouth, lump in throat, nausea, abdo pain, frequent / loose stool
Resp - hyperventilation, breathlessness, chest tightness
GI - urinary frequency, failure of erection, amenorrhoea
Others - hot / cold flushes, faint / light headed, dizziness, tremor, sweating, headache, muscle pains, numbness
What psychiatric symptoms does GAD present with?
Feeling of impending doom Restlessness Exaggerated startle response Concentration difficulties Irritability Insomnia Night terrors Derealisation / depersonalisation
(depression may coexist = mixed anxiety and depressive disorder)
How is diagnosis of GAD made?
At least 4 of physical / psychiatric symptoms
What are some medical conditions that may be differentials for GAD?
CV - arrhythmia, IHD
Resp - asthma, COPD, PE, hypoxia
Neuro - temporal lobe epilepsy
Endocrine - hyper/hypothyrodisim, hypoparathyroidism, pheochromocytoma
Other - hypoglyceamia, anaemia, SLE
What are some prescribed medications that may be differentials for GAD?
CV - anti HTN, anti arrhythmic
Resp - bronchodilators, alpha adrenergic agonists
Neuro - anticholinergic, anticonvulsants, antiparkinsonians
Psych - antidepressants, antipsychotics, disulfram, BDZ withdrawal
Other - thyroxine, NSAIDs, abx, chemo
Outline the stepwise approach to managing GAD
1) Education about GAD and active monitoring
2) Low intensity psychological interventions
- Self help
- Psychoeducational groups
- Sleep hygiene
3) High intensity psychological interventions
- CBT
- Applied relaxation
OR drug treatment
4) Highly specialist input
What drug treatment is recommenced for GAD?
1st line = SSRIs (low dose)
- Must warn about risk of suicidal thinking and self harm in those <30yr
- Weekly follow up for first month
Beta blockers for tremor and palpitations
BDZ short term
- 2-4wks as highly addictive
- Avoid if alcohol dependent as they are metabolised and cleared by liver
- Buspirone is an alternative anxiolytic medication
What is the prognosis of GAD?
Generally very poor with high remission rates
Comorbidities are frequent and often become more significant
- Other anxiety disorders
- Depression / dysthymia
- Alcohol and drug problems
- Other ‘physical’ symptoms eg IBS
30% never marry, often unemployed
What is a panic attack?
A period of intense fear with panic symptoms that develop rapidly, reach peak at about 10 mins, and subside after 20-30mins
May be spontaneous or situational, can occur during sleep
At least 4 specific symptoms of anxiety
What is a panic disorder?
Recurrent panic attacks not secondary to substance misuse, medical conditions or another psychiatric disorder
Variable frequency
Persistent worry about having an attack may lead to phobic avoidance or behavioural changes
How common are panic attacks and panic disorder?
Lifetime risk:
- 8% panic attack
- 4% panic disorder
Which gender and age group are panic disorders more common?
F3:1M
Two common onset ages: early adulthood and middle ages
What are two theories behind the pathophysiology of panic disorder?
Hyper-responsive synaptic 5HT and NA receptors
Hypersensitive carbon dioxide brainstem receptors = false suffocation hypothesis
What is the inheritability of panic disorder?
30-40%
What is the ICD-10 of panic disorder?
1) Recurrent panic attacks
2) Not restricted to any particular situation or set of circumstances
3) Unpredictable
4) Dominant symptoms include:
- Sudden onset palpitations
- Tachycardia
- Chest pain
- HTN
- Tachypnoea
- Breathlessness
- Dizziness
- Tremor
- Sweating
- Nausea
- GI upset
- Feelings of unreality = depersonalisation or derealisation
These symptoms are commonly misinterpreted and people think they are going to die which adds to the anxiety
+/- agoraphobia
+/- hyperventilation syndrome (HVS)
(Diagnosis of panic disorder should not be given if someone has a depressive condition at the same time)
Ddx of panic disorder
Psych - another anxiety disorder, substance or alcohol misuse / withdrawal
Endocrine - Cushing’s, hyperthyroidism, hypoparathyroidism, hypoglycaemia, phaeochromocytoma
Haem - anaemia
CV- arrhythmia, mitral valve prolapse, MI
Resp - COPD/asthma, HVS
Neuro - temporal lobe epilepsy, vestibular dysfunction
What investigations should be done for panic disorder?
Exclude physical cause: FBC U&Es Glucose TFTs Calcium ECG Toxicology
What is the management of panic disorder?
Biological:
SSRI (sertraline) = first line
TCAs
BDZ if severe
Education and low/high intensity psychological interventions
- CBT = effective at treating avoidance, and teaches relaxation and control of hyperventilation
What comorbities are common with panic disorder?
Agoraphobia
Depression
Other anxiety disorders
Alcohol misuse (30%)
Is there a trigger in panic disorder?
No there is no specific stimuli
If the attacks of anxiety do have a specific stimulus consider it a phobic disorder rather than generalised panic
What is a phobia?
A persistent extreme irrational fear which causes anticipatory anxiety of the feared object or situation leading to avoidance