There&#x27;s a difference between &quot;can&#x27;t&quot; and &quot;don&#x27;t like to&quot;, they aren&#x27;t going to suffer from any severe withdrawal effects from not having it other than simply not liking being sober. Caffeine withdrawal is far worse for example.  Of course if they&#x27;re using it for something like pain relief, or some other medical reason like you said, that doesn&#x27;t really count as addiction.