The essential characteristic of the parafilia is the presence of repeated and intense sexual fantasies of type excitation, of impulses and of sexual behaviors. For many of these subjects the fantasies or the stimuli are definitely necessary to reach the sexual excitement. If the excitement stops in the fantasy without coming to the action it is said that it does not become a perversion as such. Next the different types of parafilias are described.
FETISHISM: It comprises the use of not living objects to obtain the sexual excitement. The object is named a fetish and supposes the favorite or exclusive method to obtain the sexual excitement. Ej: shoes, underwear...
TRAVESTISMO / TRANSVESTISMO: It bears the use of clothes of the sex put up to obtain the sexual excitement. When this conduct interferes, the subject experiences an intense frustration. It usually happens in heterosexual males and also in homosexuals, although between the above mentioned it does not have because to be a motive of sexual satisfaction.
ZOOFILIA OR BESTIALITY: The principal criterion is the sexual act with animals.
PAIDOFILIA OR PAEDOPHILIA: The sexual excitement is obtained preferable or exclusively thanks to the fantasy or act of having sexual relations with a child prepuberal. The election can be homosexual or heterosexual, although the last one is twice more frequent than the first one. Another constant of the perversion is that they are penalized, so they hide, they are careful with the justice.
EXHIBITIONISM: It consists of repeated acts in which the genitals are exhibited to a stranger with the intention of obtaining sexual satisfaction without this going accompanied by an attempt of carrying later sexual relations out with him.
VOYEURISMO: The subject gets excited sexually observing the naked people or who realizes some type of sexual activity. This is the method that he prefers, or the only one capable of exciting him. He usually does not look for contact with the spied people.
MASOCHISM: The sexual excitement is obtained across the physical suffering of a preferable or exclusive way. The methods usually the humiliation, be tied, tormented or struck be... If only fantasies and not acts exist such a diagnosis should not be done, although only one act can be sufficient to do it. These subjects can put in danger his life.
SADISM: To be satisfied sexually it must inflict pain and suffering, humiliation to the sexual couple, who can consent or not in the dealing. Any activity of this type can cover all the intensity grades up to putting in danger the life of other.
INTRODUCTION 
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