A Cervicogenic Mechanical–Glymphatic Shared Subtype Hypothesis of Bipolar Depression: A Theoretical Extension Based on the Investing Fascia–Carotid Sheath–Six-System Coupling Framework
Depressive episodes in bipolar disorder (BD) and major depressive disorder (MDD) overlap considerably in clinical presentation, making differential diagnosis challenging. Existing models have largely focused on central and molecular levels, with little systematic investigation of “cervicogenic mechanical constraint.” W...