Background: It is common for people with multiple sclerosis (MS) to have depression and chronic pain. Individuals with MS who have depression and/or pain often use more health care services, benefit less from treatment, and have poorer quality of life. While evidence-based medical and behavioral treatments for depression and pain exist, they are often not offered or accessible to persons with MS. As a result, chronic pain and depression are under-treated in people with MS. One way to better treat these problems is through a "Collaborative Care" approach. In this approach a care manager (nurse supervised by expert physicians, psychiatrists, and psychologists) helps coordinate and provide high-quality, evidence-based treatments for depression and pain. The care manager also makes sure that the care is focused on the patient's goals and preferences. The care is provided by phone or in person based on the patient's preference. Although this approach has been used successfully with patients with many different conditions, it has never been tested in patients with MS, pain, and depression.