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Anxiety: Overview

Anxiety: Overview

Anxiety is a common mental disorder featuring excessive worry, fear, and apprehension, significantly affecting daily life. People with anxiety disorders experience persistent and intense anxiety, interrupting their everyday functioning.
Individuals with anxiety often experience a range of physical and emotional symptoms, including sweating, trembling, tachycardia, and disturbances in sleep patterns. These symptoms vary in intensity and frequency but are generally disruptive and distressing.

Social Anxiety Disorder

Social Anxiety Disorder

Social anxiety disorder, also known as social phobia, is characterized by an intense fear of social situations where one might face humiliation, rejection, embarrassment, or negative evaluation. This disorder leads individuals to avoid activities like casual conversations, public speaking, or seemingly simple tasks such as eating, signing documents, or swimming, in public settings. Its impact extends beyond discomfort, often significantly interfering with daily functioning and quality of life.

Panic Disorder

Panic Disorder

Panic disorder is an anxiety disorder characterized by recurrent and sudden minutes-long episodes of intense fear, known as panic attacks. These attacks may feel like heart attacks and often happen without warning or a specific cause. They can include symptoms such as rapid heart rate, shortness of breath, chest pain, trembling, sweating, dizziness, and a sense of helplessness. During a panic attack, individuals may feel as though they are experiencing a heart attack or are in a...

Generalized Anxiety Disorder

Generalized Anxiety Disorder

Generalized Anxiety Disorder (GAD) is a chronic condition characterized by excessive and uncontrollable worry that persists for at least six months, significantly interfering with daily functioning. Unlike situational anxiety, which arises in response to specific stressors, GAD often occurs without a clear cause. Individuals may experience disproportionate worry about work, health, or relationships. For instance, a person might continuously fear poor health despite normal medical evaluations or...

Anxiolytic Drugs: Overview

Anxiolytic Drugs: Overview

Anxiolytic drugs are vital in managing anxiety disorders by effectively alleviating symptoms such as excessive fear, tachycardia, and tremors. There are several classes of anxiolytic medications, each with unique mechanisms of action and potential side effects.
Primary Types of Anxiolytic Drugs
1. Benzodiazepines:
Benzodiazepines bind to the GABA-A receptor in the brain, enhancing GABA's interaction. This action reduces neurotransmission, effectively blocking anxiety-associated limbic circuitry.

Anxiolytic Drugs: Benzodiazepines and Buspirone

Anxiolytic Drugs: Benzodiazepines and Buspirone

Benzodiazepines are a class of anxiolytic drugs known for their rapid efficacy and high therapeutic-to-lethal dose ratio, but with a potential risk of drug dependence. These drugs are lipophilic, allowing for rapid absorption after oral administration, eventually reaching the central nervous system (CNS). Once in the CNS, benzodiazepines bind to the allosteric site of the GABAA receptor. This binding enhances the inhibitory effects of the neurotransmitter GABA. By doing so, they prevent...

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Related Experiment Video

Updated: Jun 18, 2026

Social Isolation Model: A Noninvasive Rodent Model of Stress and Anxiety

Social Isolation Model: A Noninvasive Rodent Model of Stress and Anxiety

Published on: November 11, 2022

What is an anxiety disorder?

Michelle G Craske¹, Scott L Rauch, Robert Ursano

¹Department of Psychology, University of California, Los Angeles, California 90095-1563, USA. craske@psych.ucla.edu

Depression and Anxiety

|December 4, 2009

Summary

Anxiety disorders share common response features, but distinct differences from depression and proposed subtypes are not consistently supported by current data. Further research using dimensional approaches is needed for DSM revisions.

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Using the Threat Probability Task to Assess Anxiety and Fear During Uncertain and Certain Threat

Using the Threat Probability Task to Assess Anxiety and Fear During Uncertain and Certain Threat

Published on: September 12, 2014

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Last Updated: Jun 18, 2026

Social Isolation Model: A Noninvasive Rodent Model of Stress and Anxiety

Social Isolation Model: A Noninvasive Rodent Model of Stress and Anxiety

Published on: November 11, 2022

Using the Threat Probability Task to Assess Anxiety and Fear During Uncertain and Certain Threat

Using the Threat Probability Task to Assess Anxiety and Fear During Uncertain and Certain Threat

Published on: September 12, 2014

Area of Science:

Psychiatry
Clinical Psychology
Neuroscience

Background:

The Diagnostic and Statistical Manual of Mental Disorders (DSM) is undergoing revisions regarding its nosological structure.
Understanding the distinct and shared features of anxiety and depressive disorders is crucial for accurate diagnosis and treatment.

Purpose of the Study:

To evaluate shared response features defining anxiety disorders and differentiating them from depressive disorders.
To assess if fear disorders can be distinguished from anxious-misery disorders based on response patterns.

Main Methods:

Systematic review of self-report symptoms.
Analysis of online indices of behavioral, physiological, cognitive, and neural responses to aversive stimuli.

Main Results:

Anxiety disorders exhibit shared symptoms and heightened responses to threat cues, contexts, and aversive stimuli.
Elevated stress reactivity, attentional biases, threat-based appraisals, and amygdala responses are common in anxiety disorders.
Differences exist among anxiety disorders and between anxiety and depressive disorders, but do not consistently support proposed subdivisions.

Conclusions:

Current data define shared response features across anxiety disorders but are insufficient for DSM nosology revisions.
Dimensional approaches are necessary to understand shared and unique response features given high comorbidity rates between anxiety and depressive disorders.