Introduction: relapse or retention to pre-treatment is one of the most important challenges in drug treatment program. Cognition of time to relapse in patients with relapse provides an opportunity for performing interventions. The aim of current study was identify the styles of relapse among drug abuser and stimulants.

Methods: This study was a cross-sectional study which in from all patients with drug abuse and stimulants referred to MMT, DIC and therapeutic camps centers in Sanandaj city (Iran), 150 patients was recruited multi-stage cluster sampling. The data collected through a Time to Relapse Questionnaire. Data analysis was performed using SPSS version 22.

Results: The mean age was 40. 52 years (SD= 11.30). The most used substance that results in treatment was opium and opium juice (41.3%). The most used therapeutic style was self-avoidance (42.7%).The most purity period of drugs was related to treatment with methadone (78.7%). In terms of relapse styles, more than half (53.4%) participants had a sudden relapse. As well as 11.3% with short delay relapse, 18% with long delay relapse and 17.3% had more than one relapse.

Conclusion: The results of this study showed that the studied group had more sudden relapse that indicates the addiction therapists should seriously considerate teaching the necessary skills to deal with high-risk situations beside pharmacotherapy.