Provided is a therapeutic or prophylactic agent for mood disorders, anxiety, schizophrenia, Alzheimer's disease, Parkinson's disease, Huntington's chorea, eating disorders, hypertension, digestive diseases, drug dependence, epilepsy, cerebral infarction, cerebral ischemia, cerebral edema, head injury, inflammation, immune related diseases, depilation, and so on. More specifically, provided is a fused azole derivative represented by general formula (I), which has arginine vasopressin 1b receptor antagonism, or a pharmaceutically acceptable salt thereof.本發明係提供情感障礙、焦慮症、精神分裂症、阿茲海默症、巴金森氏症、杭亭頓舞蹈症、進食障礙、高血壓、消化器疾病、藥物依賴症、癲癇、腦梗塞、腦缺血、腦浮腫、頭部外傷、發炎、免疫相關疾病、脫毛症等疾病之治療或預防劑。具體而言，係提供具有精胺酸-血管加壓素1b受體拮抗作用之以一般式(I)表示之縮合唑衍生物、或其醫藥上容許之鹽
