Anxiety Disorders

Anxiety Disorders - Anxiety Disorders Phenomenology,...

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Unformatted text preview: Anxiety Disorders Phenomenology, Etiology, Diagnosis, and Treatment Anxiety versus Fear Anxiety : Apprehension about future danger Fear : Alarm reaction to present danger Fight or flight response Symptoms of Anxiety Behavioral symptoms Avoidance, escape Cognitive symptoms Excessive worry, hypervigilance, difficulty concentrating Emotional symptoms Dread, irritability, subjective distress Physiological arousal Physiology of Anxiety Brain : Limbic system (hippocampus, septum, amygdala) Behavioral inhibition system: freeze, anxiety, apprehensively evaluate Fight/flight system: alarm, flight Neurotransmitter - GABA HPA axis : Hypothalamic-pituitary- adrenalcortical Axis: Hypothalamus - Pituitary gland - adrenal gland- cortisol HPA Axis Hypothalamus CRH to pituitary CRH = corticotrophin-releasing hormone Pituitary ACTH to adrenal gland ACTH = adrenocorticotrophic hormone Adrenal gland epinephrine (adrenaline) and cortisol hormone Cortisol hypothalamus & pituitary Biological Contributions Genetic factors Inherited predisposition to become anxious Expression of anxiety influenced by social environment Neurobiological Factors BIS overactivity Neurotransmitters: GABA, Norepinephrine, and serotonin Temperament...
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Anxiety Disorders - Anxiety Disorders Phenomenology,...

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