嗜睡症

嗜睡症	shì shuì zhèng	hypersomnia / excessive sleepiness (medical)
嗜	shì	(bound form) to have a strong liking for; to be addicted to
睡	shuì	to sleep / to lie down
症	zhèng	disease / illness
症	zhēng	abdominal tumor / bowel obstruction / (fig.) sticking point