Remember fifty years ago when everyone smoked? Since tobacco found its way into Europe in the sixteenth century, smoking has been a controversial issue. Fifty years ago, almost everyone smoked, and fifty years before that, smokers were in the doghou...

The essential guide to differential diagnoses. Appreciation of the differential diagnosis for a particular symptom or sign has been a pillar of the practise of general medicine for generations of doctors. Keeping a broad differential in mind when a...