The Diagnostic Criteria for Primary Insomnia Include All of the Following

The diagnostic criteria for primary insomnia include all of the following EXCEPT

A) The disturbance is not due to the direct physiological effects of a substance or a general medical condition.
B) Main complaint is difficulty falling or staying asleep, for at least one month.
C) There is significant distress or impairment in some area of functioning.
D) Sleep disturbance is frequently accompanied by nightmares which cause nighttime awakening.
E) The disturbance does not occur exclusively during the course of another mental disorder.