1. The American Psychiatric Association’s Diagnostic and Statistical Manual of Mental Disorders-5 (DSM-5) defines chronic insomnia as difficulty in falling asleep, staying asleep, and/or early morning awakening, accompanied by at least one daytime issue such as fatigue, attention problems, or mood instability that occurs at least 3 times per week and lasts for how many months?
- American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, DSM-5. Washington, DC: American Psychiatric Association; 2013.
- Ouellet MC1, Savard J, Morin CM. Insomnia following traumatic brain injury: a review. Neurorehabil Neural Repair. 2004;18:187-198.
- Riemann D, Nissen C, Palagini L, et al. The neurobiology, investigation, and treatment of chronic insomnia. Lancet Neurol. 2015;14:547-558. doi:10.1016/S1474-4422(15)00021-6. Epub 2015 Apr 12.
- Baglioni C, Regen W, Teghen A, et al. Sleep changes in the disorder of insomnia: a meta-analysis of polysomnographic studies. Sleep Med Rev. 2014;18:195-213.
- Morin CM, Vallières A, Guay B, et al. Cognitive behavioral therapy, singly and combined with medication, for persistent insomnia: a randomized controlled trial. JAMA. 2009;301:2005-2015. doi:10.1001/jama.2009.682.