Does a medical practitioner have a moral obligation to mislead a patient about hiscondition, if he has subjective certainty, that revealing the truth to the patient mayharm him even more? Or, perhaps the practioner is always bound to fully inform thepatient about true state of his health? Idea that pertains to those questions is, in itsnature, achronic. It has accompanied medicine since its birth and has also becomean issue pondered by philosophers. Over the course of centuries, various ethicalfundaments have been created by social and historical contexts. Their purpose wasto evaluate the so called ‘white lie’. The intention of this article is to classify and describemain ethical concepts, within which a solution to this issue has been sought for.