嗜睡症 Traditional form: 嗜睡症 Pinyin (reading): shìshuìzhèng Definitions: hypersomnia excessive sleepiness (medical) Characters: 嗜 - addicted to, fond of, with a weakness for 睡 - to sleep, to doze 症 - ailment, disease, illness Traditional characters: 嗜 - addicted to, fond of, with a weakness for 睡 - to sleep, to doze 症 - ailment, disease, illness