Co-occurring disorders, also known as dual diagnoses, occur when someone experiences both a mental health condition and a substance use disorder at the same time. For many adults, this does not begin with addiction or a clear diagnosis. It often starts with feeling stuck, disconnected, or unsure of direction.
Some people use substances to cope with anxiety, low mood, anger, or a growing sense of hopelessness. Others feel lost, unmotivated, or overwhelmed and turn outward to distraction or escape. Over time, these patterns can intensify emotional symptoms and make daily life, relationships, and responsibilities harder to manage without support.
According to SAMHSA, about 20.4 million American adults were reported to have both a mental health disorder and a substance use disorder in the past year. Among those with serious mental illness, nearly half also live with a substance use disorder. These numbers highlight how common and complex this experience is, and why integrated, compassionate care matters.