Chronic Insomnia and Depression Link: Hyperarousal Physiology, Mood Dysregulation, and CBT-I Treatment Pathways
Chronic insomnia is a persistent difficulty initiating sleep, maintaining sleep, or achieving restorative sleep, occurring at least three nights per week for three months or longer, with significant daytime impairment. A key clinical feature—highlighted by the “always braced” body—is physiologic hyperarousal: autonomic activation (e.g., elevated sympathetic tone), increased cortical alertness, and heightened stress reactivity. This… Read More »