Nightmare Disorder With Associated Other Sleep Disorder

The purpose of this clinical trial is learn whether a behavioral (non-medication) treatment can reduce nightmares in adults with Rapid Eye Movement (REM) Sleep Behavior Disorder (RBD). People with RBD will be enrolled in the study along with their family members (a partner or other family member residing in the same home). All participants will receive the treatment via videoconference and will complete 2 assessments. Participants with RBD will attend 7 sessions, and their family members will attend 2 of those sessions with them.

The purpose of this clinical trial is learn whether a behavioral (non-medication) treatment can reduce nightmares in adults with narcolepsy. All participants will receive the treatment and will complete three assessments. Half of the participants will receive the treatment after the first assessment, and half will receive it after the second assessment. Romantic partners of participants with narcolepsy will also be eligible to enroll in the study. Partners will complete three assessments but will not participate in the treatment.