There are several discussions regarding the types of authorship irregularities of scientific articles that become more abusive and more frequent: gift author, guest author, pressured author, ghost author... Some define a ghost author as "a person who has made an important contribution to the research or writing of a manuscript but is not named as an author." (Pain Medicine 2015; 16: 416–420). Today, I invite you to think about what kind of situations ghost authors can occur in, and how do you think authors and editors can deal when identifying such situation. Share your opinion!