Explain what is meant by anxiety disorder

CHAPTER 23, Anxiety Disorders
In completing the case study, students will be addressing the following learning objectives:
Explain what is meant by anxiety disorder.
Identify symptoms of anxiety disorders.
1. Amy is a 33-year-old housewife who has been saying that she is worried but cannot explain why she feels worried.  Amy and her husband have two children, and the family members are healthy and financially secure and have no identified problems.  Amy has resigned from her volunteer position at her children’s school, stating that she is tired.  Amy always had great pride in keeping an immaculate home and preparing nutritional meals for her family.  For the past month, she has neglected her housework and seldom cooks meals for her family.  For the past 3 weeks, Amy has told her husband that she is afraid that “something bad is going to happen to us.”  Amy is now afraid for her children to leave the home to attend school and for her husband to go to his office to work.
(Learning Objectives: 1, 2)
a. What is an anxiety disorder, and does Amy have this disorder?
b. What other differential diagnoses would you consider? OR What predisposing factors or etiologies are associated with anxiety disorders?