Care patterns in multiple sclerosis: principal care, comprehensive team care, consortium care.

Health care for multiple sclerosis has evolved over the past two decades from fragmented, sporadic, and crisis-oriented interventions to an organized system of services. The proliferation of comprehensive care centers and the development of a network of health care providers have provided a model for other chronic neurologic illnesses. In addition, concepts such as principal care and maintenance therapy may prove to be relevant to care in multiple sclerosis.