Yes
This is 100% a thing. It is not something an addict should fuck around with. There will be times in life in which pain will be too great and the choice is required for relief in one wants to enjoy life, but don't take that choice lightly. A lot of us who spend years developing confidence in ourselves and in the good are all to ready to jump right back down the rabbit hole when a guy with 12 years of college and a lab coat tells you he is giving you Hydromorphone (Dilaudid) tablets.
This is a relatively true story. I have had many attempts at sobriety in my life before getting on this current path. At that point, I had been clean from Heroin for about 10 months. I was going to meetings, doing the right things, you all know the deal, I was on my game. I wouldn't have even lied to my dentist about fucking flossing every night. Had to have some relatively serious sinus surgery. One conversation, 10 minutes of my life. I played the doctor hard. I had spent years developing a medical chart that had my favorite Opioids put into the limelight. Oxycodone makes me sick. Morphine makes me sick. There was this one that worked perfectly, shit what was it Dilantin?
Not only was it my favorite, I knew I would be tripling the relative prescription by injecting those tablets. I went into that situation with a plan. In one moment, the conversation, I remember it so crystal clear, when the surgeon came in, I don't remember any other word but him saying "Pain?" and then coming to once the conversation was over. I used the entire prescription in less than 48 hours and was using Heroin within 50 hours and would continue for another half-dozen years.
All it takes is one taste. They call it a "taste", but it's a lot more than that. To have that taste is to taste it with every sensory organ in your body all at once. We don't have a word for this other than, "feel".
The human mind, even at its dumbest is faster than any computer that any of us are sitting at by exponents. We sometimes doubt our abilities to think. How much memory can transpire in a single second, a shit ton. What's it like to remember what it was like to feel safe? I know when I think of Opioids, I'm not too afraid to tell you that my experience of comfort and safety was like hugging my Mother after my Father had behaved badly. I can still call my Mother. I can write her a card. I can even hug her. I can never get that feeling back though. My point is, do not ever question what you would do to feel safe.
The cravings will subside after a few days but they will be heavy. If you really care about staying good, I highly advise you to tell someone how you're feeling. Look, I'm a junkie too. It's not our proudest moment to admit to those we love that we are the dregs of society. The ones we love though are the ones we love because they would never judge us like that.
Tell your people about how you're feeling. Do not do anything stupid like start watching Intervention on marathon or trolling Erowid experience reports of injecting Heroin for the first time. Why don't you read a book instead?
The Lord of the Rings will teach any person all that there is to know about addiction.
When you put it like that ... ! 
The box is literally six feet away from me and I can't move them without explaining a lot of stuff.