Lee has trouble falling asleep almost every night.As a result,he is unable to perform well at work,and so has lost his job.Based on this criterion,he may be diagnosed with

A) insomnia disorder.
B) posttraumatic stress disorder.
C) generalized anxiety disorder.
D) antisocial personality disorder.

Insomnia disorder is characterized by difficulty in falling or staying asleep on a regular basis, leading to daily impairment in functioning, such as difficulty at work. Posttraumatic stress disorder is characterized by symptoms such as intrusive memories, avoidance, and hyperarousal, and is typically related to a traumatic event. Generalized anxiety disorder is characterized by excessive worry and anxiety about everyday events or activities. Antisocial personality disorder is characterized by a disregard for the rights of others and social norms, and is typically diagnosed in individuals aged 18 years or older who have a history of conduct disorder before the age of 15. None of the symptoms mentioned for these disorders match Lee's symptoms, so the best choice is A- Insomnia disorder.