Abstract
This chapter discusses medical action , homeopathic medical action in particular, from a semiotic perspective. Every medical action begin with a colection of data, namely medical Signs (non-verbal) and Symptoms (verbal signs). Togheter with Instrumental signs offered by laboratory and different technologies they constitute a pool of data to be interpreted and the premises for decision making that leads to a certain prescription, recommandation or intervention. The meaning of signs in the medical context relate to reference values we have called normative signs around which semiotic fields are organised. Decision making folowed by action will then be followed up according to the feedback from patient and the process will be restart and continues till the desired, or possible, result.