Generalized Anxiety Disorder, Phobias & Obsessive-Compulsive Disorder

An error occurred trying to load this video.

Try refreshing the page, or contact customer support.

Coming up next: Mood Disorders: Depression, Persistent Depressive Disorder & Bipolar Disorder

You're on a roll. Keep up the good work!

Take Quiz Watch Next Lesson
Your next lesson will play in 10 seconds
  • 0:00 Anxiety
  • 0:58 Generalized Anxiety Disorder
  • 2:17 Phobias
  • 4:41 Obsessive-Compulsive Disorder
  • 6:29 Lesson Summary
Save Save Save

Want to watch this again later?

Log in or sign up to add this lesson to a Custom Course.

Log in or Sign up

Speed Speed
Lesson Transcript
Instructor: Paul Bautista
When do we cross the boundary between natural worry and the debilitating types of anxiety associated with disorders? In this lesson, you'll explore some common anxiety disorders and their potential causes.

Anxiety Disorder

Have you ever felt anxious, maybe before a big test or an important job interview? A half an hour, or even an hour before, you get butterflies in your stomach or find yourself nervously pacing your living room. You go over questions and answers in your head, and despair that you should have started prepping months ago instead of just last week. Once the test or interview is over, you feel relieved; it went fine, you remembered everything you needed to and your heart rate's returned to normal. This kind of anxiety is a natural and normal response to a stressor like an interview. But imagine if you'd started worrying about that interview a week in advance and had been unable to concentrate on anything else in the meantime; imagine if afterward, instead of feeling relieved, you continued to worry. This kind of anxiety is out of proportion to the stressor that triggered it and represents one kind of anxiety disorder, a disruptive condition that can interfere with functioning in daily life.

Generalized Anxiety Disorder

There are many types of anxiety disorder. The kind we just described, which would cause you to worry for weeks about an interview, is known as Generalized Anxiety Disorder, abbreviated GAD. GAD affects approximately 3% of American adults and is characterized by excessive and uncontrollable worry that is disproportionate to circumstances; it's fine to worry about the interview, but it's worrying all week that is the symptom of the disorder. GAD can also cause physical symptoms like fatigue, headache, nausea, trembling and insomnia. You may have felt some of these in response to normal, passing anxiety. Maybe you've felt queasy before a big important test. But imagine feeling that way all the time, in response to little things, and you've got some idea of what it's like to live with GAD.

The disorder seems to have many possible causes. It's probably genetic, since it tends to run in families, but has environmental causes as well, since it's sometimes triggered by experiencing normal stress. It's also been associated with addictions to alcohol or sedatives. The part of the brain that processes fear, called the amygdala, has also been related to GAD; it seems like if its connections to the rest of the brain are interrupted, it can result in increased anxiety. But with all of these factors, it is difficult to tell if they cause GAD or if they are simply further symptoms of it.


Another anxiety disorder you might be familiar with is called a phobia. You've probably heard some of the long, complicated names like arachnophobia and triskaidekaphobia which really just mean fear of spiders and fear of the number 13. These are known as specific phobias. Someone with arachnophobia has an out-of-proportion anxious response to a specific trigger--spiders--but not in other situations. Indiana Jones isn't somebody we'd think of as having generalized anxiety, but he certainly has ophidiophobia: a fear of snakes.

Some people also have social phobias, or anxiety that is produced by having to interact with other people. Fear in general of social interactions is known as social anxiety. Have you ever felt nervous before going to a party where you might not know everybody? Or before you've had to go to an event where you were expected to network? If so, you've experienced mild (and temporary) social anxiety; like with GAD, social anxiety only becomes a disorder when it is out of proportion, constant or debilitating. If your anxiety actually prevented you from attending any social functions, you'd have 'social anxiety disorder.'

Just as people with a 'specific phobia'--like Indiana Jones' fear of snakes--experience anxiety only with certain triggers, some people have social anxiety set off by particular situations. This is known as a specific social phobia. You've probably felt uncomfortable using a public restroom at some point in your life--they're kind of gross, and the whole process is ripe for potential embarrassment. But for someone with paruresis, using public restrooms induces debilitating anxiety--they literally cannot use the bathroom while other people are around. This is played for laughs in a number of TV shows, like Buffy¸ Scrubs and Coupling, but it can really make life difficult for those whose activities are limited by needing to find a private restroom.

To unlock this lesson you must be a Member.
Create your account

Register to view this lesson

Are you a student or a teacher?

Unlock Your Education

See for yourself why 30 million people use

Become a member and start learning now.
Become a Member  Back
What teachers are saying about
Try it now

Earning College Credit

Did you know… We have over 220 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Create an account to start this course today
Used by over 30 million students worldwide
Create an account