Similar to other forms of
sexual fetishism and other
paraphilias, no consensus has yet been established about the specific causes of foot fetishism. While many works on the topic exist, their conclusions are often regarded as highly speculative. Currently widely accepted etiological models hypothesize paraphilias to originate from a complex set of neurological, cultural, and
psychodynamic factors in a given person. Different paraphilias may have different causes, and there is no guarantee that two persons with the same paraphilias as the other would be interested in the same aspects of it or have the same ultimate cause for its development. For example, some individuals with a foot fetish are attracted to
foot odor, while others are not.
Neurological hypothesized that the genital areas being closest to areas related to sensory processing of the foot are a potential explanation for some or all cases of foot fetishism.
Sensory neuron theory The
cortical homunculus is a "map" of sensory and motor neurons. Neuroscientist
V. S. Ramachandran proposed that the closeness of genital-related neurons to neurons regulating sensory and motor functions in the toes and feet may lead to foot fetishism. Ramachandran did not provide experimental evidence for this claim in his original work. A 2013 study involving 800 subjects criticized this hypothesis, showing that there was very little neuronal activation from foot stimulation or inter-correlation between foot regions and others, as well as issues regarding Ramachandran's usage of the cortical homunculus model to explain the core of foot fetishism. The study also conducted a
meta-analysis that showed that there are no known cases of erotic stimuli being produced from
neurostimulation in the cortex. The authors did not rule in or out that other areas relating to emotional or erogenous stimulation may have been involved. The other proposed brain areas for researching into similar sensory zones in the study were the
thalamus, the
periaqueductal gray, and the
insula, which are all connected to erogenous zones and have complex relations to
sexuality,
emotions, and
prosocial behavior. These areas primarily develop
prenatally.
Temporal-lobe mechanisms In extremely rare cases of
lateral temporal lobe epilepsy, foot fetishism and other paraphilias are known to spontaneously occur. These episodes are often characterized by extremely sexually impulsive behavior, such as a foot fetishist with epilepsy licking the feet of others unprompted, stealing items of sexual interest (in this scenario,
footwear) and public
masturbation or sexually assaulting hospital staff in those whom are
institutionalized. The vast majority or all of the fetishism and impulsive behavior immediately disappears once treatment of the epilepsy occurs, leading to the hypothesis that the temporal lobe may have a key role in fetishism and other paraphilias. It is common for people with epilepsy to report significant changes in sexuality after a
lobectomy of one or both of their temporal lobes, with a rarer amount documenting a perceived wiping of an existing sexual interest or a new one occurring. A case study of a man with a fetish for safety-pins in early childhood who later on developed
absence seizures became well known after a coincidental surgery to fix the epilepsy ended up accidentally ridding him of his fetishism towards safety-pins. In a case study of two
intellectually disabled adults who had severe forms of foot and
shoe fetishism since early childhood that involved sexually assaulting others by licking and touching the feet and shoes of complete strangers, the usage of
carbamazepine for temporal lobe epilepsy detected during a screening accidentally caused a complete cessation of any fetishism of the feet in one of the subjects and caused partial remission of foot fetishism in the other, while completely stopping the impulsive sexual behavior. Temporal lobe dysfunction has been noted in studies regarding other paraphilias such as
pedophilia and those with
hyposexuality. The relation between the temporal lobe and sexual dysfunction, or why fetishes can sometimes be wiped or gained from dysfunction of the temporal lobe, are poorly understood. Other brain lesions have also been noted to affect sexuality and fetishism in different ways, with
hypothalamic lesions being a similar example to the symptoms experiences in temporal lobe epilepsy. For example, a future fetishist may notice a correlation between feet and footwear like high-heels and other sexually appealing attributes, which when viewed over and over again, result in development of the fetish.
Masturbation is a proposed explanation for how the fetish sustains itself into adulthood once it initially appears. Personality traits linked to susceptibility to conditioning such as
introversion have been correlated in fetishists, who are hypothesized to be more susceptible to noticing the correlation between the fetish object and other sexual stimuli due to increased internal thinking regarding the stimuli. In a study of 262 homosexual and bisexual males who were part of a foot fetishist organization in the 1990s, Wernberg et al. found that while 80% respondents did not report
child abuse (unlike some other paraphiliac classes like
biastophiliac respondents), about half reported "no significant friendships" in adolescence, and of about 20% of respondents who felt comfortable answering open-ended questions about the development of their fetish reported various scenarios, with the only commonality being the association between articles of clothing, sneakers and feet being part of individuals they found attractive or with sex. Wernberg claimed that the study showed a cultural and personalized cause of foot fetishism due to the selectivity of scenarios regarding feet, with examples such as that over 60% of respondents attracted to shoes reporting that they would not be interested in unworn shoes (with the rest saying that they preferred to fantasize about the potential wearer of one in thrift stores or in photos on magazines), and that the subjective attractiveness of the person with the foot or shoes mattered. Foot fetishists also psychologically clustered different types of shoewear to different classes of people that they found attractive, with sneaker fetishists often associating them with young gay men and boots with domineering men. About 75% of the shoe fetishists said that the attributes of the wearer, alongside the shoes, were necessary for arousal. The social and gender implications of the wearer of the shoes/bearer of the feet were also important to the fetishists. Wernberg showed that like with other paraphilic interests, many of the foot fetishists had other paraphilic sexual interests, with about 66% reporting having engaged in BDSM at some point in their lives, and about 30% of them saying that "all or most" sexual contact involving feet from them was as part of a greater role as a sadist/masochist in sexual roleplay. About 58% also were attracted to clothing and undergarments, particularly the smell. Foot fetishists are usually able to get some form of sexual partner to comply with their foot fetish unlike other particular fetishes, which Wernberg puts primarily on the commonality of shoewear and footwear as a sign of sex in Western culture and the relative innocence of the fetish perceived by the public in comparison to others that may be seen as more disturbing or offensive. The psychodynamic portrayal of fetishists as often having been either socially or sexually isolated teenagers who developed the fetish as part of sexual daydreaming about the sex most preferred to their
sexual orientation and/or those exposed to the object in a sexual way that felt positive at an early age was used as an explanation for the 50% rate of social withdrawal by Wernberg, as well as a case study of a foot fetishist in 1979 who reported the former model of development as a child. The study aimed to test whether or not personality factors could be an antecedent of partialism and fetishism as a whole. The suggested mechanism is that fetishists aim their erotic feelings towards body parts associated with potential partners, rather than the psychological concept of a romantic or sexual relationship with the partner in an example of adaptive
social learning theory and operant conditioning, where the fetishist learns to divert their sexual expectations elsewhere as part of a learnt behavior.
Individual and sociological factors Foot fetishes, particularly what a fetishist with one would consider to be sexually arousing characteristics of the feet themselves, and potentially whether they develop it or not can be molded by the society that they are raised in, with some societies having normalized certain rituals involving the feet as sex symbols or displays of the
feminine beauty ideal in that particular culture. Homosexual males with a foot fetish often remark that the bigger size and lack of feminine characteristics of the male foot render it as a sex symbol of masculinity, akin to parts such as the
penis, with the opposite occurring in bisexual fetishists, who often remarked that feminine aspects of the foot and add-ons such as high-heels and polish rendered it a symbol of femininity in their minds. Sensory experiences such as licking and smelling foot odor were rated as arousing because of their perceived
intimacy. The massaging of the feet of a partner or attempting to apply pleasing sensory experiences to the feet to please their partner was considered arousing by some foot fetishists in surveys, as they deemed the feet to be a private, erogenous zone for foreplay.
Being dominated was also listed as a reason for enjoying feet during sex, with the mental concept of the feet as a dirty area and its usage by a sadistic dominant to be a key part of this particular fantasy.
Sigmund Freud's reading of foot fetishism also involved early imprinting, but he considered the smell of feet significant in this.
Krafft-Ebing's imprinted memories Richard von Krafft-Ebing in his book
Psychopathia Sexualis attributed the cause of fetishes like foot fetishes to be largely due to childhood events which "imprint" erotic memories related to the object via either accidental association or a mental correlation between the object and concomitant sexual activity. The initial "spark" is forgotten, while the sexual feeling is then transferred to adulthood. Krafft-Ebing claimed that hand and foot fetishism were largely correlated with other paraphilias in his other case studies, particularly
sadism and masochism.
John Money's "lovemap" theory The
lovemap theory by
John Money attempts to explain sexual interests in terms of a "map" of what an individual finds erotic. He hypothesized that all humans possess innate concepts of what they find attractive that are unique to them and are developed over time during childhood and puberty. Forced hyposexuality (or forced avoidance of an object), abuse, lack of sexual play or messaging regarding sexual intercourse, or an otherwise non-sexual event that is paired with sexual stimuli (i.e a coincidental
erection) are hypothesized root causes for culturally alien atypical sexuality and fetishism under this model. Another explanation proposed for fetishism is that an early childhood event that is mistakenly implanted by the brain as typical sexual stimuli for the lovemap may be discovered later as an adult via
pornography or self experimentation. When classifying paraphilias, Money had claimed that sexual expressions of fetishism and paraphilias are the individual in question attempting to reconcile with the societal disgust, illegality, or negative internal feelings they may have regarding the paraphilia/fetish. Under the lovemap model, Money suggests that fetishism results from a conflict where the individual must weigh the taboo of the fetish from their culture and their unique sexual needs as a human being. Fetishism is the result of the individual attempting to gain control of what they believe to be a transgression of their sexual needs, where they replace the socially acceptable lover with the object to save society from their taboo while claiming victory. Due to social pressure, the individual must repeat this ritual repeatedly, which reinforces the fetish without ultimately satisfying the need for independence.
Psychodynamic Anatomical baseness of the foot Georges Bataille saw the lure of the feet as linked to their anatomical baseness (
abjection).
Castration complex Sigmund Freud saw the fetishism of toes on the foot as a surrogate for the
penis that served as a primitive psychological defense against the fear of the shattering of the
castration complex (and a defense against the resulting
castration anxiety), which is the belief that men and women both have penises that Freud hypothesized was a key part of the
phallic stage of his model of human development, which in the same model is later shattered, marking the end of the phallic stage.
Otto Fenichel similarly saw castration fear as significant in foot fetishism, citing a future fetishist who as an adolescent said to himself "You must remember this throughout life – that girls, too, have legs", to protect himself from the fear. Where fear of the (castrated) female body is too great, desire is felt not for shoes on female feet but for women's shoes alone, without women.
Health and disease Some researchers have hypothesized that foot fetishism increases as a response to epidemics of
sexually transmitted infections. In one study, conducted by A. James Giannini at
Ohio State University, an increased interest in feet as sexual objects was observed during the great
gonorrhea epidemic of twelfth-century Europe, and the
syphilis epidemics of the 16th and 19th centuries in Europe. In the same study, the frequency of foot-fetish depictions in
pornographic literature was measured over a 30-year interval. An exponential increase was noted during the period of the current
AIDS epidemic. In these cases, sexual footplay was viewed as a
safe sex alternative. However, the researchers noted that these epidemics overlapped periods of relative female emancipation. == Psychiatry ==