A return to use means you or your loved one needs to make a few calls in the next day or two, before shame has time to settle in. Like diabetes or asthma, addiction is a chronic condition that can flare, and a relapse tells you something about what the treatment plan missed. It is information, not a verdict on the person. Maybe the medication needs adjusting, or a trigger went unaddressed. What you do this week matters more than the slip itself.