[EN] The ultimate goal of this thesis is to provide a systematic and in-depth study concerning perversion. This has been primarily adopted from a psychoanalytic approach and, secondarily, a philosophic approach since eroticism and its pathological expression, perversion, extend to all human reality and as such more answers (and more questions) can be found in the connection between various fields of knowledge. In the fewest possible words, this thesis is the study of perversion through the dialogue between psychoanalysis, philosophy and other social sciences.; [ES] El objetivo final de esta tesis doctoral es ofrecer un estudio profundo y sistematico acerca de la perversion. Para ello se ha adoptado fundamentalmente un enfoque psicoanalitico, y secundariamente filosofico, pues el erotismo y su expresion patologica, la perversion, se extiende a toda la realidad humana y como tal pueden hallarse mas respuestas (y nuevas preguntas) en la conjuncion entre varios campos del saber. En pocas palabras, se trata de un estudio acerca de la perversion a traves del dialogo entre psicoanalisis, filosofia y otras ciencias humanas.