The term erotomania is often confused with "obsessive love", obsession with unrequited love, or hypersexuality. Obsessive love is not erotomania by definition. Erotomania is also called de Clerambault's syndrome, after the French psychiatrist Gaetan Gatian de Clerambault (1872-1934), who published a comprehensive review paper on the subject (Les Psychoses Passionelles) in 1921.">