Sexual fetishism, or erotic fetishism, can be sexual arousal caused by any object, situation, or body part. Usually, it is caused by items that are not normally sexual. Sexual fetishism may be thought of, in psychiatric medicine, as a disorder of sexual preference, It may also be thought of as a better way to a relationship. The sexual acts as fetishes are normally not personalized and objectified, even when they involve a partner. Body parts may also be the subject of sexual fetishes (also known as partialism). This is where the body part preferred by the fetishist takes a sexual precedence over the owner.