Johns Hopkins Psychiatry Guide
Insomnia Disorder
DEFINITION
- Insomnia is described as the subjective complaint of difficulty initiating, maintaining, or returning to sleep in the setting of adequate sleep opportunity.
- Insomnia disorder is associated with consequences that affect daytime functioning.
- Symptoms must occur 3 nights/week and for at least 3 months and not be better explained by another sleep-wake disorder, substance, or mental disorder[1][2].
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Last updated: July 16, 2025
Citation
Young, Lisa, et al. "Insomnia Disorder." Johns Hopkins Psychiatry Guide, The Johns Hopkins University, 2025. Johns Hopkins Guides, www.hopkinsguides.com/hopkins/view/Johns_Hopkins_Psychiatry_Guide/787083/2.1/Insomnia_Disorder.
Young L, Esagoff A , Speed T, Neubauer D. Insomnia Disorder. Johns Hopkins Psychiatry Guide. The Johns Hopkins University; 2025. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_Psychiatry_Guide/787083/2.1/Insomnia_Disorder. Accessed October 31, 2025.
Young, L., Esagoff, A. ., Speed, T., & Neubauer, D. (2025). Insomnia Disorder. In Johns Hopkins Psychiatry Guide. The Johns Hopkins University. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_Psychiatry_Guide/787083/2.1/Insomnia_Disorder
Young L, Esagoff A , Speed T, Neubauer D. Insomnia Disorder [Internet]. In: Johns Hopkins Psychiatry Guide. The Johns Hopkins University; 2025. [cited 2025 October 31]. Available from: https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_Psychiatry_Guide/787083/2.1/Insomnia_Disorder.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - Insomnia Disorder
ID - 787083
A1 - Young,Lisa,B.S., B.A.
AU - Esagoff,Aaron,B.S.
AU - Speed,Traci,M.D., Ph.D.
AU - Neubauer,David,M.D.
Y1 - 2025/07/16/
BT - Johns Hopkins Psychiatry Guide
UR - https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_Psychiatry_Guide/787083/2.1/Insomnia_Disorder
PB - The Johns Hopkins University
DB - Johns Hopkins Guides
DP - Unbound Medicine
ER -
