Not all people agree that the condition sexual addicion exists. There is considerable debate among psychiatrists, psychologists, sexologists, and other specialists whether compulsive sexual behavior constitutes an addiction. They also disagree about its classification and possible diagnosis. Research on animals has shown that compulsive sexual behavior uses the same mechanism of action that is also responsible for drug addiction in laboratory animals. As of 2018, neither the DSM or ICD medical classifications recognise sexual addiction as a valid diagnosis. 