Final answer:
The true statement about panic disorder is that it can coexist with generalized anxiety; however, it's false to say anxiety disorders usually exist alone, or substance abuse disorders rarely occur with anxiety disorders. The true statement is "A second anxiety disorder may co-occur with the first" (Option 2).
Step-by-step explanation:
A true statement about panic disorder is that it can coexist with generalized anxiety in the same patient. However, there are several common misconceptions regarding panic disorder. One false statement is that anxiety disorders generally exist alone; on the contrary, it's more common for individuals to have more than one anxiety disorder.
Additionally, the claim that anxiety disorders virtually never coexist with mood disorders is incorrect, as there is a high comorbidity between anxiety disorders, including panic disorder, and mood disorders such as depression. Another false statement is that substance abuse disorders rarely coexist with anxiety disorders; in fact, there is a notable rate of comorbidity between these disorders, often due to self-medication efforts by the individuals affected.
Thus, the correct answer is number 2.
Your question is incomplete, but most probably your full question was
A true statement about panic disorder is that it can coexist with generalized anxiety in the same patient. What statements are false about panic disorder?
1. Anxiety disorders generally exist alone.
2. A second anxiety disorder may co-occur with the first.
3. Anxiety disorders virtually never coexist with mood disorders.
4. Substance abuse disorders rarely coexist with anxiety disorders