Communication with patients presents an important part of a physicians’ work. The dis­agreements that appear during the consultation process, can affect quality of care. This is the reason why we have to detect the disagreements in time and react accordingly. With this paper we would like to present the definition and the impact of the disagreement on the doc­tor patient relationship. The ways of dealing with the disagreement are described. A brief outline of an instrument for collecting and analysing disagreements DisCo is given.