Anxiety Disorders

Introduction

What Is Anxiety?

Jump to section What Is Anxiety? When It's a Problem Quick Overview External Resources

Anxiety is a psychological state characterized by feelings of fear or dread in response to perceived threats or stressful situations. While it is a natural and normal reaction to danger, excessive intensity or prolonged duration of these feelings may indicate the presence of an anxiety disorder.

At some point in our lives, most individuals experience some form of anxiety. This may stem from rational concerns — such as fear of poor academic performance — or from worries related to financial and health-related matters. Anxiety is a natural human response to uncertainty and life stressors.

"Anxiety is a universal phenomenon experienced by all human beings at one time or another during the course of their lives." — DiTomasso, 2006

When Does Anxiety Become a Problem?

Anxiety becomes problematic when it involves:

An excessive preoccupation with irrational fears
Feelings that interfere with physical and emotional well-being
Avoidance of everyday situations or responsibilities
Persistent worry that lasts more than 6 months

A person's perception of an event or situation viewed as a threat could be enough to provoke an anxiety response — even if the threat is not real.

1 in 12
Canadians are affected by Generalized Anxiety Disorder at any given time
(Canadian Psychological Association, 2021)

Infographic showing how anxiety can make you feel, including symptoms like easily irritated, loss of appetite, easily fatigued, heart beats faster, lightheaded and dizzy, butterflies in your tummy, unable to sleep, and like hiding away — Figure 1: Common feelings and symptoms associated with anxiety disorders.

The Four Main Types of Anxiety Disorders

Among the many anxiety-related conditions, the most common are:

Generalized Anxiety Disorder (GAD) — persistent, uncontrollable worry
Obsessive-Compulsive Disorder (OCD) — intrusive thoughts and repetitive behaviors
Posttraumatic Stress Disorder (PTSD) — triggered by traumatic life events
Social Anxiety Disorder (SAD) — intense fear of social situations and judgment

At a Glance

Anxiety Disorders Overview

Table 1: Overview of the four most common anxiety disorders
Disorder	Abbreviation	Key Characteristic	Who It Affects
Generalized Anxiety Disorder	GAD	Excessive, uncontrollable worry not tied to one situation	1 in 12 Canadians
Obsessive-Compulsive Disorder	OCD	Recurring intrusive thoughts and compulsive rituals	1.5–3% globally
Posttraumatic Stress Disorder	PTSD	Develops after exposure to a traumatic event	Anyone exposed to trauma
Social Anxiety Disorder	SAD	Intense fear of negative evaluation in social settings	Often begins in childhood

Conclusion

Key Takeaways

Anxiety disorders are complex conditions that affect both the mind and the body, influencing how a person thinks, feels, and functions in their daily life. They are shaped by biological, psychological, and environmental factors.

🧠 Biological

Brain chemistry, genetics, and neurological differences all play a role in anxiety disorders.

💬 Psychological

Learned behaviours, thought patterns, and traumatic experiences can trigger or worsen anxiety.

🌍 Environmental

Life stressors, family environment, and academic or social pressures contribute significantly.

With the right diagnosis, professional support, and treatment, individuals can successfully manage their symptoms and improve their quality of life.

Trusted External Resources

The following credible organizations provide additional information and support for anxiety disorders:

Canadian Psychological Association (CPA)

Official fact sheets and professional resources on anxiety disorders, including GAD.

Centre for Addiction and Mental Health (CAMH)

Comprehensive information on anxiety disorders, treatments, and mental health support in Canada.

Psychology Today – Anxiety

Research-backed articles on anxiety disorders, therapist locators, and self-help resources.