Abstract
Objective: To test the efficacy of cognitive behavioraltherapy for insomnia (CBT‐i) in Parkinsonʼs Disease (PD)and to evaluate its impact on indices of daytime andpsychological functioning.Method: Fifteen patients with insomnia disorder (ID)comorbid to PD were enrolled in a single‐case design withmultiple baselines. Total wake time, sleep efficiency, anddaytime sleepiness were recorded on a sleep diary. Selfreportedmeasures of insomnia, anxiety and depressivesymptoms, health‐related quality of life, and psychologicalvariables perpetuating ID were completed. All patients alsounderwent a clinical interview for ID diagnosis.Results: CBT‐i was associated with significant changes insleep variables and ID criteria. Significant positive treatment‐related effects were also noted for all indices ofdaytime and psychological functioning, and for variablesperpetuating ID. All of these improvements were wellmaintained at 3‐month follow‐up.Conclusion: CBT‐i is a promising therapeutic avenue forpatients with PD.