Medical problem-solving: a five stage approach in primary medical care.

A methodology for a five stage or pentagonal problem-based approach to solve individual or family health-related problems is described. The model can be applied in health worker learning, student teaching or problem solving in the real world of the patient and his/ her family within the context of community health. The model stresses interdisciplinary co-operation, the consideration of ethical factors in each case, and a logical transition from individual patient care to community diagnosis and intervention. The model is applicable to any disease process, all levels of care, all levels of intervention and all clinical disciplines.