Due to the fact that caring is the essence and main role of nurses, we make an historical perspective to place ourselves on the current moment. We also debate the need for adequate care, and therefore, teaching and research to a model that could give properly answers to every health/disease process. For this purpose, it is briefly described the historical stages of nursing and the situation of a man who suffers from fibromyalgia to contrast it with Jean Watson model care, the paradigm of transformation and knowledge associated to critical thinking.