Having a phobia means you are extremely afraid of a specific object, situation, or activity. Having a phobia about something is very different from everyday worry or stress. For example, most people feel worry and stress at some time, such as when speaking in front of a large group of people. People with phobias have so much fear that it's hard to do normal activities, such as going to work.
Having a phobia includes feeling stressed about being near the object, being in the situation, or doing the activity. It also includes being afraid of the object, situation, or activity itself. People with phobias avoid what they are afraid of so they won't feel worried and stressed.
The first step is to rule out the possibility that your symptoms are being caused by a medical condition that is not psychiatric. Among the conditions that produce symptoms similar to those of anxiety are hyperthyroidism or other endocrine problems, too much or too little calcium, low blood sugar, and certain heart problems. Certain medicines also can sometimes cause anxiety. A thorough evaluation by your health care provider will determine if any of these conditions are the cause of your symptoms...
The cause of phobias is unknown. If you have a family member with a phobia, you are more likely to have a phobia. Sometimes a person might have a phobia because he or she:
Had something bad happen, such as being bitten by a dog.
Had a panic attack in a specific situation, such as being in an elevator.
Saw something bad happen to someone else, such as seeing a person fall off a building.
Saw someone else who was very scared of something, such as sitting in an airplane near a person who is afraid of flying.
Learned about something bad happening, such as a plane crash.
Phobias usually start when a person is a child or a teenager. Children have more animal phobias, natural environment phobias, and blood-injection-injury phobias than teenagers or adults. Situational phobias usually start when a person is an adult. Women often have phobias at a younger age than men do. If a person has one phobia, he or she is likely to have another phobia as well.