When does assessment of a client with co-occurring disorders occur?

The assessment of a client with co-occurring disorders occurs regularly over time because it allows professionals to effectively monitor the individual's progress, understand the evolving nature of their conditions, and tailor treatment approaches as needed. Co-occurring disorders, which involve both mental health and substance use issues, can change and develop throughout the treatment process. Continuous assessment is crucial for identifying any new concerns, tracking improvements, and ensuring that interventions remain effective and relevant. This ongoing evaluation assists in adjusting treatment plans based on the client's response and emerging needs, ultimately supporting better outcomes in recovery.

The other options do not reflect the best practice for addressing co-occurring disorders: assessment should not be limited to the beginning of treatment, be restricted to after treatment completion, or solely occur at the client's request, as these would fail to capture the dynamic and complex nature of their conditions.