Addiction is likely to create a bevy of legal issues that are going to make it hard to ignore that something is going on. A DUI or getting thrown in the clink for a drunk and disorderly is an obvious tell that your loved one's judgment is off. But there are also less obvious signs, like doctor shopping or frequenting ER rooms. And addicts can justify their behavior so that they make you feel foolish for asking why they have so many doctor appointments. But if you think something's wrong, go ahead and ask anyway.