Chronic Insomnia Disorder
A persistent pattern of sleep initiation or maintenance difficulty, driven by conditioned hyperarousal and maladaptive behaviors.
The 3P Model of Insomnia
Spielman's 3P model is the dominant framework for understanding how acute insomnia transitions into a chronic state:
Clinical Diagnosis
Chronic insomnia is diagnosed when sleep difficulties occur at least 3 nights per week and persist for at least 3 months, despite adequate opportunity for sleep, causing significant daytime impairment.
First-Line Treatment: CBT-I
The American College of Physicians (ACP) recommends Cognitive Behavioral Therapy for Insomnia (CBT-I) as the initial treatment for all adult patients.
While hypnotic medications (Z-drugs, benzodiazepines) provide acute relief, they do not address the perpetuating factors and carry risks of dependency, tolerance, and rebound insomnia.