Page:Psychopathia Sexualis (tr. Chaddock, 1892).djvu/75

Rh leading to the perverse act. Therein will be found the key of diagnosis (v. infra).

Paræsthesia may occur in combination with hyperæsthesia. This association seems to be frequent clinically. Sexual acts are then confidently to be expected. The perverse direction of sexual activity may be toward sexual satisfaction with the opposite or the same sex. Thus two great groups of perversions of the sexual life may be distinguished.

1. Association of Active Cruelty and Violence with Lust—Sadism. —That lust and cruelty frequently occur together is a fact that has long been recognized and not infrequently observed. Writers of all kinds have called attention to this phenomenon. The not infrequent cases where individuals of very excitable sexual natures bite or scratch the companion in intercourse fall within physiological limits. The older authors have called attention to the relation between lust and cruelty.