Endocrinological and polysomnographic findings in Kleine-Levin syndrome: no evidence for hypothalamic and circadian dysfunction.

Five subjects--four men, ages 17-28, and one woman, age 30--with Kleine-Levin syndrome were investigated during symptomatic (SP) and asymptomatic (ASP) periods. Investigations comprised medical history, MRI, polysomnography, 24-hour hormone profile of human growth hormone, melatonin, TSH, cortisol and FSH (in the woman only) assessed every 2 hours, actimetry, and sleep logs. Medical history confirmed presence of the three symptoms diagnostic of of typical Kleine-Levin syndrome: hypersomnia, excessive food intake, and psychic alteration.

Circadian temperature and activity rhythms in unmedicated narcoleptic patients.

Fifteen unmedicated narcoleptic patients with and without sleep-onset REM period (SOREMP) were compared with 16 unmedicated, age-and-sex-matched control subjects with respect to polygraphic, core body temperature and motor activity recordings. Whereas narcoleptic patients with SOREMPs had significantly more quiet wakefulness during sleep, those without SOREMPs had significantly more quiet wakefulness during daytime than the other groups. Compared with that of controls, temperature of both narcoleptic groups showed (a) less rise of temperature curve in the morning, (b) dampening of temperature amplitude, (c) phase advance of acrophase, and (d) advance of temperature minimum after sleep onset.