The goal of this clinical trial is to learn if high-frequency rTMS works to treat etomidate addiction in adults. It will also learn about the safety and tolerability of rTMS. The main questions it aims to answer are:
* Does active rTMS reduce craving, amount of etomidate use, frequency of etomidate use, and severity of etomidate use disorder?
* Does active rTMS improve cognitive biases related to delayed reward discounting and risk sensitivity?
* What side-effects do participants have when receiving rTMS?
Researchers will compare active rTMS to sham rTMS to see if active rTMS works to treat etomidate addiction.
Participants will:
* Receive active rTMS or sham rTMS over 4 weeks
* Complete 20 rTMS sessions in total
* Visit the clinic for treatment sessions and follow-up assessments
* Complete assessments of etomidate use, craving, withdrawal symptoms, mood symptoms, cognition, and decision-making
Attend follow-up assessments up to 6 months after baseline