Paraphilia (also known as sexual perversion and sexual deviation) is the experience of intense sexual arousal to atypical objects, situations, or individuals. No consensus has been found for any precise border between unusual sexual interests and paraphilic ones. There is debate over which, if any, of the paraphilias should be listed in diagnostic manuals, such as the Diagnostic and Statistical Manual of Mental Disorders (DSM) or the International Classification of Diseases (ICD).