For some opiate addicts, the patch is a step up the ladder to increased addiction, as
fentanyl is extremely potent
and can induce quite a bit of euphoria. The slower delivery of a patch is generally safer than a short-acting pill, but some people start to 'play' with the patches-- they wear several at once, or cut them, smoke them, chew them... or they apply heat to them so that they release the drug faster and your skin picks it up more quickly.