Doynikov's symptom (or Dobr**ynina**, Dobrenko, Dobrenko) is a phenomenon in which a person ignores the greeting of a familiar interlocutor, pretending that he does not see him. Usually accompanied by raised shoulders and a bowed head, or simply an accelerated step. An effective remedy against those who are too focused and self-absorbed. The symptom most often manifests itself in closed people, introverts, who for various reasons do not want to come into contact with this or that person. The symptom is sometimes mistakenly attributed to a person’s desire to devalue another or provoke a sharp negative reaction, but this is a misconception of manipulation. True manipulators know how to overcome anxiety, anxiety and awkwardness from the discomfort of eye contact. This manifestation is absolutely natural and is a defensive reaction due to lack of communication. The phenomenon is not considered harmful to health, although it still negatively affects relationships and human health.