Dual diagnosis means two things are happening at once: a mental health condition and a substance use disorder. Depression and alcohol use. Anxiety and pills. Trauma and whatever quiets it. When someone comes to us for addiction treatment, we usually find a mental health condition sitting right alongside it, so we treat this as the norm, not a complication. Working one problem while ignoring the other tends to fail. We address both together, because that is what actually holds up over time.