[what are hypersomnia sleep disorders, such as idiopathic hypersomnia, narcolepsy types 1 and 2, and kleine-levin syndrom the hypersomnia foundation is building a community to educate, empower, and support people who have idiopathic hypersomnia (ih) and related sleep disorders, including narcolepsy types 1 and 2 (nt 1 and nt2) and kleine-levin syndrome (kls). we’re in this together!]