Diane is constantly concerned about things at work, even when she is at home. she is constantly worried about her home life, even when she is at work. diane has free-floating worry that leaves her tense, irritable, impairs her concentration, and leaves her with many sleepless nights. diane most likely suffers from disorder.

Generalized anxiety disorder (GAD)

Explanation:

Generalized anxiety disorder (GAD) is characterized by extreme, intense depressive moods about day-to-day activities with no apparent cause for concern. Individuals with signs of severe anxiety generally expect catastrophe at all times and still can't quit worrying regarding health, income, friends, job, or school.

Generalized anxiety disorder (GAD)  is the answer

Explanation:

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