CUS
noun [ U ] medical specialized uk/ˌsiː.juːˈes/ us/ˈsiːˌjuːˈes/
慢性未分化型精神分裂症（chronic undifferentiated schizophrenia的缩写）
abbreviation for chronic undifferentiated schizophrenia: a condition in which someone has more than one of the symptoms of schizophrenia (= a serious mental illness)