Yes, there are specific detox units and clinics that specialize in this, but if you work in the ICU, you will see it frequently. We get ETOH withdrawal patients that are there only for that reason, and we also get patients who are admitted for other reasons, but we start to notice s/s on day 4 or so. Also, any other kind of drug issue occurs, too. Overdose, whether incidental or intended. So, you can take care of patients with addiction in the ICU, too.
However, your job is more to medically stabilize them, obviously, so there's not as much time to talk as there would be in a clinic; also, most of the time they are not lucid, though I did have 1 or 2 that became lucid who I was able to talk with regarding their addiction.
Best of luck to you! They are an under-served area where people judge them all of the time. Yes, they chose to start drinking, but they didn't choose to become addicted. I would think being able to see them make a full turn-around would be very rewarding.