Key Clinical Question-How does one diagnose and treat insomnia in adults?Evidence Review-Summary of meta-analyses of chronic insomnia treatments.Bottom Line-Insomnia is a common clinical condition characterized by difficulty initiating or maintaining sleep, accompanied by symptoms such as irritability or fatigue during wakefulness. The prevalence of insomnia disorder is approximately 10-20%, with approximately 50% having a chronic course. Insomnia is a risk factor for impaired function, the development of other medical and mental disorders, and increased health care costs. The etiology and pathophysiology of insomnia involve genetic, environmental, behavioral, and physiological factors culminating in hyperarousal. Efficacious treatments for insomnia include behavioral, cognitive, and pharmacologic interventions. Simple behavioral interventions are feasible in primary care settings, but lack of training in these techniques limits their use. Among pharmacologic interventions, the most evidence exists for benzodiazepine receptor agonist drugs, although persistent concerns focus on their safety relative to modest efficacy. Behavioral treatments should be used whenever possible, and medications should be limited to the lowest necessary dose and shortest necessary duration.
Dr. ShipMs. J is a 51-year-old woman with insomnia, which began at age 35 when her infant daughter had very disrupted sleep. By the age of 7, her daughter's sleep was improved, but Ms. J's was not. She was able to fall asleep, but was unable to stay asleep after about 3 in the morning. Ms. J tried several medications with variable success and side effects. She currently takes gabapentin, which is working well. She is very attentive to "sleep hygiene," and maintains a regular bedtime and waking time. M.s J's past medical history is notable for mild depression, Raynaud's Syndrome and myelodysplasia/myelofibrosis. Ms. J works as an educational consultant. She lives with her husband and two teenage children. She exercises regularly by swimming, cycling, and running. She does not use tobacco and has 1/2 glass of wine 3 nights per week. Current medications include escitalopram 20 mg daily, gabapentin 1200 mg qhs, and nifedipine SR 60 mg daily in cold weather. Ms. J has no drug allergies. On physical examination, Ms. J is healthy and fit. Weight is 121 pounds, blood pressure 119/64, and pulse 68 beats per minute.