Clinical characteristics of the included patients.

YoB = year of birth, Ann. Freq = patient appreciated annual frequency of episodes, Duration = duration of episodes, Hs = hypersomnia, Hph = hyperphagia, Ha = hallucinations, Dp = depersonalisation and/or derealisation (as not clearly separated by some patients), Hx = hypersexuality, Ps = psychiatric symptoms, A = alcohol intake, I = infection, Me = Mental exhaustion, sWmi = subjective working memory impairment (asymptomatic periods), R = right.