Sleep-related functioning in stable bipolar disorder, insomnia, and healthy individuals

Seventy percent of euthymic patients with bipolar disorder exhibited a clinically significant sleep disturbance.

• Euthymic patients with bipolar disorder showed impaired sleep efficiency compared to insomnia and good sleep groups.
• Higher levels of anxiety and fear about poor sleep were reported by the bipolar disorder group.
• Lower daytime activity levels were observed in euthymic patients with bipolar disorder.
• A tendency to misperceive sleep was present among euthymic patients with bipolar disorder.
• Dysfunctional beliefs about sleep in the bipolar disorder group were similar to those in the insomnia group and significantly higher than in the good sleeper group.

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