Fast Five Quiz: Presentation and Diagnosis of Insomnia

Jasvinder P. Chawla, MD, MBA


November 08, 2021

The third edition of the International Classification of Sleep Disorders (ICSD-3) revised the definition of insomnia in 2014, subclassifying insomnia as short-term, chronic, or other.

In the past, chronic insomnia was defined as either primary or comorbid. This system was updated because it did not sufficiently guide diagnosis or treatment options. Calling insomnia comorbid may suggest that it is a secondary condition that will resolve upon treatment of the primary condition; in reality, however, the cognitions and behaviors that manifest in insomnia must be addressed whether or not a patient is diagnosed with another co-occurring medical or psychiatric disorder.

Insomnia can also be classified as either chronic insomnia, which is present for at least a month, or acute or transient insomnia, which may last days to weeks.

Learn more about insomnia.


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