What is Dejavu?

The feeling of having experienced an event before is called "déjà vu". While the feeling of "I have experienced this incident before" is formed, one knows that it is not possible to actually experience it. The word comes from French as the origin of the word, déjà (previously) and voir (to see), is the name of a situation experienced before, or feeling like you have seen a place seen before, the moment experienced before the moment dejavu. Those who feel that the incident happened before do not remember any details about the matter. Although déjà vu is not a disease, according to various studies, if this feeling is repeated continuously, then the disease can be suspected and it is useful to see a specialist. Scientific explanations on this subject are very important.