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.
Learn more about insomnia.
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Cite this: Jasvinder P. Chawla. Fast Five Quiz: Presentation and Diagnosis of Insomnia - Medscape - Nov 08, 2021.