目標：近來毒品濫用與施用者年輕化的問題甚為嚴重，初次接觸毒品常以K他命為主。本研究目的為探究K他命膀胱炎患者中止濫用K他命的經驗，瞭解K他命膀胱炎患者其中止K他命濫用的歷程與影響因素。方法：本研究採質性研究設計，以立意取樣方式，對9位K他命膀胱炎患者進行面對面深度訪談，並將訪談資料轉成逐字稿進行內容分析。結果：將中止K他命濫用歷程分為：K他命濫用成型、掙扎階段、初步中止、穩定中止或失敗等四階段。促進中止K他命濫用因素有健康信念與自我覺察、家庭支持與正向人際關係、宗教信仰寄託、偏差友伴網絡瓦解、司法矯治介入。結論：建議重視醫療人員在K他命戒治中的積極性角色、毒品濫用中止需跨單位的協調與合作、輔導戒治宜從脈絡檢視物質濫用者的需求、建立保護性通報機制、透過醫療系統的治療輔導替代行政裁罰以中止K他命濫用的問題。

Objectives: Drug abuse is more common among young people than it is in other age groups. For some, their initial exposure to drugs is ketamine. The purpose of this study was to investigate the experiences of people with ketamine cystitis who had desistance ketamine abuse. Methods: The study adopted a qualitative research design, and conducted in-depth interviews with nine patients with ketamine cystitis. The interview data were converted into transcripts for content analysis. Results: The desistance process of ketamine abuse was divided into four stages: The start of Ketamine abuse, struggling to stop, initial desistance, and stable desistance or failure. The causes of trigger desistance Ketamine abuse were health concerns and self-awareness, family support and positive interpersonal relationships, religious beliefs, and collapse of the supply network. Conclusions: It is recommend that medical professionals become involved in programs to end ketamine addiction and coordinate and cooperate in interdisciplinary team work with drug abusers. Treatment should assess the context of drug abuse and establish a secure notification mechanism. Medical treatment could substitute for administrative sanctions for ketamine addition, and an emphasis on preventing ketamine abuse could reduce the abuse of more harmful drugs.