Le syndrome de Koro

Koro Syndrome: Epidemiology, Psychiatric and Physical Risk Factors, Clinical Presentation, Diagnosis, and Treatment Options

Koro syndrome is a multi-tiered disease presenting as an overwhelming belief that one's sex organs are shrinking into their body. Moderate to severe anxiety attacks are associated with the condition, along with a fear of imminent death. Koro is often culturally related and is most seen as an epidemic form in East and Southeast Asia, although it can present anywhere worldwide in its sporadic form. The condition typically affects young males who believe in sex-related myths, and many individuals can co-present with anxiety, depression, or even psychosis. Although most presentations of Koro are self-limiting, the condition is harmful for one's self-esteem and quality of life, and some individuals may go through extreme, physically injurious measures to prevent genital retraction. Treatments include the use of psychotherapy that has a sex education component, especially if the patient believes in culturally rooted myths. In sporadic Koro, it is believed that if the primary psychiatric disorder is treated with anxiolytics, antidepressants, sedatives, or psychotics, the secondary Koro-like symptoms will also fade. Additional investigation on the prevalence, pathogenesis, factors that correlate with treatment efficacy are needed to fully understand Koro syndrome.

Classical Koro and Koro-Like Symptoms: Illustration from Canada

Koro syndrome has been colorfully described as a pathological distortion of one’s body image of the genital organ. In Koro, body image dysphoria is characterized by severe anxiety related to the delusional idea that one’s genitals will shrink and retract into one’s abdomen, eventually leading to death. This syndrome was first reported in South East Asia, where endemics have been described, but it has also sporadically occurred globally. We present a systematic literature review on Koro syndrome and report 7 cases from Canada. A search review with PubMed and Google Scholar resulted in 504 entries. Sixty-seven manuscripts were eventually selected following a thorough elimination process. The resultant literature underscored the cultural diversity that underlay the reported cases. Various aspects of Koro have been examined (eg, etiological, clinical, diagnostic, and cultural aspects). It has stimulated substantial scholarly debate, discussions, correspondences, and arguments from anthropological, psychiatric, psychological, and biological perspectives. In our series, it seems that Koro could have been misattributed here. The primary concern was not with penile retraction of the cases. To our knowledge, this is the first time that a series of cases is documented from North America where the syndrome is often ignored. We highlight the potential differences between the classical Koro syndrome and a collection of beliefs related to the perception or delusion of penile retraction in other codable psychiatric disorders, Koro-like syndrome. Understanding Koro syndrome beyond geographic boundaries is in line with our collected case reports of Koro from outside Asia.

The Roko Syndrome: A Mirror of Koro Syndrome

It is well established that 1 in 50 individuals receives a diagnosis of body dysmorphic disorder (BDD). Within body image disorders, there is genital retraction syndrome also known as Koro. A unique syndrome in which there is a heightened belief that one’s genitals will diminish in size, retract into the abdomen and ultimately lead to death. However, we have recently discovered a separate form of BDD that is directly opposite of Koro, in which the patient presents a strong belief that his penis will enlarge and extend out of their body. We present a unique case report of a counter-Koro syndrome. This syndrome is characterized by the delusion that one’s penis is growing larger and that it will result in its extreme protrusion from the abdomen and a consequent fear of recurring and visible erections. Given its mirror-like presentation and uniqueness to occurring only in males, we refer to it as Roko Syndrome. To our knowledge, this syndrome has not yet been reported in the literature and requires further study to understand whether it fits as a separate syndrome or falls along the spectrum of body dysmorphia. Thus, assessments used to identify body image disorders can be broadened to include items representing the behavior and presentation of Roko that we delineate in comparison of Koro. The new syndrome is also easily distinguishable from a priapism which is a urological emergency.