Agoraphobia is not an anxiety disorder limited to a single situation. Individuals with agoraphobia typically experience excessive anxiety and fear in at least two of the following situations:

* Using public transportation (taxis, buses, trains, boats, airplanes, etc.)
* Being in open spaces (parking lots, market places, bridges, etc.)
* Being in enclosed spaces (elevators, theaters, cinemas, etc.)
* Standing in line or being in a crowd
* Being outside the home alone

During the diagnostic process, your doctor may ask you detailed questions to assess your symptoms. These questions often include:

* What are the troubling symptoms you are currently experiencing?
* When did you first notice these symptoms?
* In which situations do your symptoms intensify the most?
* What factors increase or decrease the intensity of your symptoms?
* Do you avoid certain situations or places because you fear they might trigger your symptoms?
* How do your symptoms affect your social life?
* Have you previously been diagnosed with any medical conditions?
* Have you received treatment for psychological disorders in the past?
* Have you ever had thoughts of harming yourself?
* Do you use alcohol or recreational drugs? How often?

In summary, agoraphobia is diagnosed based on the following elements:

* Reported signs and symptoms
* An in-depth interview and medical history taken by the doctor
* A detailed examination to rule out other medical or psychiatric conditions that could be causing your symptoms

The criteria for agoraphobia listed in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), published by the American Psychiatric Association, also serve as an important reference point in the diagnostic process.