A therapeutic agent or a preventive agent for alopecia areata has an RORγ antagonistic activity, and, there is a therapeutic agent or a preventive agent for alopecia areata, including a cyclic amine derivative typified by the following compound or a pharmacologically acceptable salt thereof as an active ingredient.
                            脱发症的治疗剂或预防剂具有 RORγ 拮抗活性,有一种脱发症的治疗剂或预防剂,其活性成分包括以下述化合物或其药理学上可接受的盐为典型代表的环胺衍
生物。