persistent thoughts about any events that really happened in the past. Often the content of these events for one reason or another is unpleasant and painful for a person, so it would be natural not to remember it, but memories, often figurative, return again and again, causing unpleasant emotional experiences. In other cases, the memories reflect emotionally neutral events. In some cases, these memories are represented by very vivid, vivid images, such as the attached sound of a popular song (obsessive eidetic images), but they are more tiring than evoke any other emotions.