Looking for sighted (not blind) people with this disorder to see what kind of treatments may work or how you manage your life with this constantly rotating sleep disorder. This is also called free-running circadian rhythm sleep disorder and has been proceeded by Delayed Sleep Phase Disorder (DSPD). This is supposedly very rare in sighted people (100 cases; not sure if this is USA or worldwide). I have seen Vanda's info but none of our doctors has prescribed hetlioz(Tasimelteon).