Which of the following symptoms is most commonly associated an anxiety disorder?
bouts of extreme happiness and depression
an irrational need to diet
a compulsion to wash repeatedly

I believe the answer is: a compulsion to wash repeatedly

Anxiety disorder tend to be caused by excessive worry which strengthen the internal belief that something bad would always happen to us. If the anxiety disorder is derived from the fear of germs or bacteria, this could cause that person to develop a compulsion to wash repeatedly.

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