DDDDDDDDDDDDD Effective management logically follows accurate diagnosis. Such logic often is difficult to apply in practice. Absolute diagnostic accuracy may not be possible, particularly in the field of primary care, when management has to be on analysis of symptoms and on knowledge of the individual patient and family. This series follows that on Problems in Practice which was concerned more with diagnosis in the widest sense and this series deals more definitively with general care and specific treatment of symptoms and diseases. Good management must include knowledge of the nature, course...