37-year-old man comes to the office due to difficulty sleeping | Uworld | Step 1

37-year-old man comes to the office due to difficulty sleeping. He says that his new job as a business executive is very stressful and requires considerable travel. During the past 3 months, the patient has made numerous trips between the United States and France. He experiences insomnia and daytime sleepiness for several days after these trips, but his sleep then improves significantly.