Women may be more likely than men to experience insomnia.9 The onset of menopause can bring hot flashes that interfere with sleep.
Women with a history of mood disorders are more likely to have a history of premenstrual dysphoric disorder, postpartum depression, and unusual responses to oral contraceptives.10 These women are more likely to report problems with mood, energy, and sleep at perimenopause. Treatment with estrogen replacement may be an option for women without risk factors, such as clotting disorders, smoking history, or a personal or family history of breast or uterine cancer. For many who are not candidates for or who refuse estrogen replacement, use of a selective serotonin reuptake inhibitor (SSRI) or serotonin-norepinephrine reuptake inhibitor at low doses may help with vasomotor symptoms but not with insomnia.
Insomnia symptoms typically increase with age.11 When sleep is adequate early in life but becomes a problem in midlife, an individual’s eating habits, obesity, and lack of exercise may be contributing factors. The typical American diet includes highly refined carbohydrates with excess salt; such foods are often readily available to the exclusion of healthy options. Overweight and obese patients may insist they eat a healthy diet with 3 meals per day, but a careful history often uncovers nighttime binge eating. Nighttime binge eating is rarely reported. This not only maintains obesity, but also interferes with sleep, since patients stay up late to avoid discovery by family members.12 This lack of sleep can lead to an endless loop because insufficient sleep is a risk factor for obesity.13
Evaluating sleep difficulties
New patient evaluations should include a careful history beginning with childhood, including personal early childhood history and family psychiatric history. Patients often report the onset of sleep difficulty and anxiety during childhood, which should raise further questions about aspects of mood regulation from early life such as concentration, energy, motivation, appetite, and academic performance. While many children and adolescents are diagnosed with attention-deficit/hyperactivity disorder due to concentration problems that cause difficulties at school, be aware this might be part of a syndrome related to mood regulation.14 Unexpected responses to an SSRI—such as agitation, euphoria, or an immediate response with the first dose—should also raise suspicion of a mood disorder. Once the underlying mood disorder is stabilized, many patients report improved sleep.15
If a patient reports having difficulty falling and remaining asleep but is not sure if there is a pattern, keeping a sleep diary can help. Further questioning may uncover the cause. Does the patient have spontaneous jerks of lower extremities (restless leg syndrome) that interfere with falling asleep or wake them up? Have they noticed problems with dreams/nightmares that wake them, which could be associated with posttraumatic stress, anxiety, or depression? Have they been told by a partner that they act out dreams or are seemingly awake but not responsive, which could point to REM sleep behavior disorder or early Parkinson’s disease? Referral to a sleep laboratory and a neurologist can help establish the correct diagnosis and point to appropriate treatment.16-18
Treatment options
Several cognitive-behavioral techniques, including cognitive-behavioral therapy for insomnia (CBT-I), yogic breathing, progressive relaxation, mindfulness meditation, and sleep hygiene techniques may help considerably,19,20 but insomnia often remains difficult to treat. Pharmacotherapy is not necessarily more effective than nonpharmacologic approaches. Both options require the patient to take initiative to either find nonpharmacologic approaches or discuss the problem with a physician and agree to take medication.21 A trial comparing CBT-I to sedatives or the combination of CBT-I plus sedatives found higher rates of sleep with CBT-I for 3 months, after which improvement fluctuated; the combination showed sustained improvement for the entire 6-month trial.22 CBT-I has also been shown to be as effective with patients who do not have psychiatric illness as for those who are depressed, anxious, or stressed.23 However, behavioral techniques that require regular practice may be difficult for individuals to maintain, particularly when they are depressed or anxious.
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