A patient states,"I feel so sad all of the time.I can't feel happy even doing things I used to enjoy doing." He also says that he is tired,sleeps poorly,and has no energy.To differentiate between dysthymic disorder and a major depressive disorder,which of the following questions should the nurse ask him?

Question

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Major depressive disorder is characterized by one or more major depressive episodes (i.e. ,at least 2 weeks of depressed mood or loss of interest accompanied by at least four additional symptoms of depression).Dysthymic disorder is characterized by at least 2 years of depressed mood for more days than not,accompanied by additional depressive symptoms.

A Patient States,"I Feel So Sad All of the Time