Cognitive behavioral therapy has been shown to be effective as monotherapy for panic disorder8 and likely would provide symptom remission without the need for pharmacotherapy. Referral for a second opinion is not indicated in this case.
REFERENCE 8. Otto MW, Deveney C. Cognitive-behavioral therapy and the treatment of panic disorder: efficacy and strategies. J Clin Psychiatry 2005;66 Suppl 4:28-32.