Anxiety disorders - clinical picture Flashcards
(73 cards)
How long does an acute stress reaction last for
- Acute stress reaction lasts hours to 3 days
Typical symptoms of acute stress
- Feelings of being numb or dazed
- Insomnia
- Restlessness
- Poor concentration
- Autonomic arousal
- Anger/anxiety/depression
- Withdrawal
Adjustment disorder
• Wide range of emotional or behavioural symptoms
• Stressor not necessarily life threatening
• Out of proportion to stressor
Lasts up to 6 months
PTSD
• Response to exceptionally threatening or catastrophic event
• … experienced ,witnessed … event that involved actual or threatened death or serious injury …. or threat to physical integrity of self or others.
… response involved intense fear, helplessness or hor
PTSD - difference in genders
- Men experience more traumatic events than women
* Women more likely to develop PTSD following trauma (except rape)
PTSD symptoms
- Re-experiencing flashbacks/nightmares
- Numbness/detachment
- Avoidance
- Hypervigilance/startle
- Insomnia
- Anxiety/depression
PTSD course
- Usually immediate onset
- Most recover within 1 year
- Rape victims
- 94% at 2 weeks
- 65% at 1 month
- 42% at 6 months
Effect of depression and substance abuse on PTSD
- Increases risk
Models of post-traumatic reactions concur that recovery is thought to require:
- ‘Working through’ the trauma memory (going through the experience again in one’s own mind)
- Understanding the meaning of the event
- Distinguishing which of the stimuli present at the time of the trauma are dangerous & which are innocuous
- Readjusting basic beliefs about the self and the world
Effect of stress on neurons
- causes functional changes
Features of generalised anxiety disorders
- Symptoms are persistent
- Symptoms are not restricted to or strongly predominating in any particular set of circumstances
- Characteristic features:
- Worry & apprehension
- Headache & motor tension (restless / trembling)
- Autonomic hyperactivity (sweating / palpitations / dry mouth / epigastric discomfort / dizziness)
Psychological symptoms of GAD
- Fearful anticipation
- Irritability
- Sensitivity to noise
- Restlessness
- Poor concentration
- Worrying thoughts
GI physical symptoms of GAD
• Dry mouth, difficulty swallowing, epigastric discomfort, excessive wind, frequent/loose motions
Respiratory physical symptoms of GAD
- Tight chest, difficulty inhaling, hyperventilation
CVS physical symptoms of GAD
- Palpitations, chest pain, missed beats
Additional symptoms of GAD
Sleep disturbances - insomnia, night terrors
- Sadness
- Depersonalisation
- Fixation with details
Co-morbidities associated with GAD
- 70%
- Especially simple phobias, social phobia, panic disorder and depression
Gender - GAD
- Women>men
Lifetime prevalence of GAD
- 8.9%
Where is GAD more prevalent
- Estimated to be 3x higher in patients in primary care clinics (indicated increased use of health care services)
Aetiology of GAD - Genetic predisposition
- Five fold increase in 1st degree relatives1
- 19.5% in relatives of GAD sufferers
- 3.5% in relatives of controls
- Monozygotic = dizygotic
- Shared heritability for GAD and mood disorders
- In summary: Genetic factors play a modest role
What is believed to mediate the effects of stress
- Mediated through cortisol - some evidence exists for abnormalities in the HPA axis
What are noradrenergic pathways associated with
- Fear, arousal and stress response; role in persistent anxiety states implicated but unclear
Specific stressors associated with an increase in risk of GAD
- Early parental death
- Rape
- Combat
- Chronically dysfunctional marital and family relationships