My friend has Hypersomnia (confirmed through a sleep study) and she has a heck of a time managing it. She takes stimulants which help but cause her other difficulties. I'm a LONG sleeper....I've asked for a sleep study but it hasn't been approved. My normal sleep is 10-12 hours and I'm always tired when stable. Waking up is painful. I hope you get the answers you seek and effective treatment.