This is a study to learn more about the use of a study medicine for the treatment of Idiopathic Hypersomnia (IH). The total duration of the study is approximately 3 1/2 months. Men and women between the ages of 18-75, with a primary diagnosis of IH, may be eligible.

The study is designed to look at the usefulness and safety of Solriamfetol (versus placebo) for the treatment of excessive sleepiness associated with shift work disorder (SWD). Study staff nor the participants will know if they are receiving a study drug or placebo. Participants will be male or female subjects 18-65 years old with a diagnosis of SWD. The study will last approximately 17 weeks, with 6 in-person visits and 8 remote visits for each participant.

Currently, there are no FDA-approved medications for the treatment of irritability associated with Autism Spectrum Disorder (ASD). This study is designed to look at the efficacy and safety of lumateperone (CAPLYTA) for the treatment of irritability associated with ASD among pediatric participants between the ages of 5 to 17 years.

It is a 6-week study, and the study drug will be compared to a placebo. Following this study, there will be an opportunity to participate in an open-label extension study where all participants will be on the active study medicine.