Anxiety Disorders Flashcards
which part of the brain acts as an ‘emotional filter’
amygdala
function of amygdala
assesses whether sensory material from thalamus needs stress or fear response – emotional filter
types of anxiety disorders
generalised anxiety disorder (GAD) panic disorder agoraphobia social phobia specific phobia
definition of generalised anxiety disorder
anxiety that is generalised + persistent but not related to an environmental circumstance
criteria for GAD diagnosis
symptoms present for most days for at least 6 months
non-controllable
causing significant distress/impairment in function
symptoms of GAD
persistent nervousness trembling/shaking sweating palpitations/ accelerated HR muscular tension dizzy/light headed insomnia
treatment of GAD
1st line : CBT
2nd line: SSRI
3rd line: SNRI (venlafaxine)
what SSRI is given in GAD
sertraline
what can be given as symptomatic relief in GAD
beta blockers for tremor
definition of panic disorders
recurrent attacks of severe anxiety (panic) which are unpredictable - not restricted to any particular situation
symptoms of a panic attack
sudden onset of palpitations, chest pain, choking sensation, dizziness + intense fear
definition of a panic attack
intense period of fear + physical + psychological anxiety symptoms
onset within a few minutes
what is agoraphobia
extreme/ irrational fear of open/public places
what happens in the brain during a panic attack
increased metabolism in the parahippocampal gyrus
where is the parahippocampal gyrus
anterior pole of temporal lobe