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  2. Fear processing in the brain - Wikipedia

    en.wikipedia.org/wiki/Fear_processing_in_the_brain

    Pathways from central nucleus of the amygdala to downstream areas then control defensive behavior (freezing) and autonomic and endocrine responses. Recent studies implicate the prelimbic cortex in fear expression as well, possibly by way of its connections to the basal and then to the central nucleus of the amygdala. [1]

  3. Panic attack - Wikipedia

    en.wikipedia.org/wiki/Panic_attack

    Substance avoidance can be important in reducing anxiety and panic symptoms, as many substances can cause, exacerbate, or mimic symptoms of panic disorder. For example, caffeine has been known to have anxiety and panic-inducing properties that can especially present in those who are more susceptible to panic attacks. [60]

  4. Generalized anxiety disorder - Wikipedia

    en.wikipedia.org/wiki/Generalized_anxiety_disorder

    Generalized anxiety disorder (GAD), also known informally as anxiety, is an anxiety disorder characterized by excessive, uncontrollable and often irrational worry about events or activities. [5] Worry often interferes with daily functioning, and individuals with GAD are often overly concerned about everyday matters such as health, finances ...

  5. Anxiety - Wikipedia

    en.wikipedia.org/wiki/Anxiety

    Anxiety is an emotion characterised by an unpleasant state of inner turmoil and includes feelings of dread over anticipated events. [1] [2] [3] Anxiety is different from fear in that fear is defined as the emotional response to a present threat, whereas anxiety is the anticipation of a future one. [4]

  6. Stress (biology) - Wikipedia

    en.wikipedia.org/wiki/Stress_(biology)

    Acute stressful situations where the stress experienced is severe is a cause of change psychologically to the detriment of the well-being of the individual, such that symptomatic derealization and depersonalization, and anxiety and hyperarousal, are experienced. [8]

  7. Depressant - Wikipedia

    en.wikipedia.org/wiki/Depressant

    [4] [5] The chemical compound tetrahydrocannabinol (THC), which is found in cannabis, has many depressant effects, such as muscle relaxation, sedation, decreased alertness, and tiredness. [6] Contrary to the previous statement, activation of the CB1 receptor by cannabinoids causes an inhibition of GABA, the exact opposite of what CNS ...

  8. Fear - Wikipedia

    en.wikipedia.org/wiki/Fear

    Fear is an unpleasant emotion that arises in response to perceived dangers or threats.Fear causes physiological and psychological changes. It may produce behavioral reactions such as mounting an aggressive response or fleeing the threat, commonly known as the fight-or-flight response.

  9. Social anxiety disorder - Wikipedia

    en.wikipedia.org/wiki/Social_anxiety_disorder

    The fear, anxiety, or avoidance is not attributable to the physiological effects of a substance (e.g., an addictive substance, a medication) or another medical condition. The fear, anxiety, or avoidance is not better explained by the symptoms of another mental disorder, such as panic disorder, body dysmorphic disorder, or autism spectrum disorder.