Their condition can often be treated completely and effectively, but many people are unaware of this fact and continue to live their lives in isolation. The cause of anxiety disorders is not known. The cause is suggested to be any number of things from chemical deficiencies to psychological disorders. The commonly held view at this point is a combination of the two. The cause may also be genetic and inheritable.
Treatment is usually a combination of medication and counseling.
If suspect that you or anyone you know may have an anxiety disorder I would advise you to seek professional help. If left to them selves they can cause a great deal of damage both physically and emotionally. There are a great deal of resources available on the web, simply go to your favorite search engine and type in Anxiety Disorders.