RT Book, Section A1 Weinstein, Amy R. A2 Stern, Scott D.C. A2 Cifu, Adam S. A2 Altkorn, Diane SR Print(0) ID 1185664195 T1 Insomnia T2 Symptom to Diagnosis: An Evidence-Based Guide, 4e YR 2020 FD 2020 PB McGraw-Hill Education PP New York, NY SN 9781260121117 LK accessmedicine.mhmedical.com/content.aspx?aid=1185664195 RD 2024/10/14 AB Patients with insomnia sometimes have trouble falling asleep, sometimes fall asleep easily but wake up during the night, and sometimes have both problems. The American Sleep Disorder Association defines insomnia as “a repeated difficulty with sleep initiation, duration, consolidation, or quality that occurs despite adequate time and opportunity for sleep and results in some form of daytime impairment and lasting for at least one month.”