[Koro--discussing a transcultural psychopathological phenomenon]

SEXUAL MEDICINE HISTORY: Koro—The Psychological Disappearance of the Penis

The aim of this article is to present a summarizing overview on ethnomedical aspects of koro (in Chinese called suo-yang), the panic anxiety state in which affected males believe that the penis is shrinking and/or retracting, and perhaps disappearing. While reduction of penile volume occurs physiologically due to vasoconstriction in cold temperature and intense anxiety, it is believed in certain cultures that genital shrinking leads to impotence and sterility, and eventually to death. Traditional Chinese medicine treats suo-yang, the reduction of the male principle yang, as a dangerous disturbance of the life-sustaining yin-yang equilibrium of the organism. Koro has therefore been held to be a Chinese "culture-bound" condition. However , the koro phenomenon is also known among diverse ethnic and religious groups in Asia and Africa, typically in cultures in which reproductive ability is a major determinant of a young person's worth. Koro epidemics of panic anxiety due to widespread fears of losing one's genitals, procreative ability, and even one's life, are triggered by rumors of genital disappearance supposedly caused in China by female fox spirits, in Singapore and Thailand by mass poisoning, and in Africa by sorcery, usually in the context of socioeconomic or political tension. Today, in contemporary Western societies, ideas of genital disappearance are not culturally endorsed. But historically, it should be remembered that in the late Middle Ages in Europe, a man could lose his membrum virile through magical attacks by witches. The conclusion is that the psychological disappearance of the penis is a universal syndrome that was described recently in Asia and Africa and already in Medieval Europe.

[The syndrome of genital retraction from a transcultural psychiatric point of view. Chinese suo yang, Indonesian koro and non-Asian forms (koro-like symptoms)]

The present article reviews the syndrome of genital retraction (SGR) from the perspective of transcultural psychiatry. It is best known as a culture-bound syndrome in Asia, e. g. koro in Indonesia or suo yang in Southern China, where it can be also observed in so-called epidemics. The syndrome is characterised by the sensation that the genitals are shrinking and being pulled back into the abdomen; this perception is associated with fear of death, because the subjects expect to die as soon as the genital has disappeared completely. Particularly in the case of suo yang, the involvement of local traditional concepts of illness can be established. In the Western world, however, SGR is observed only in single cases. The symptoms are less dramatic and do not show a particular cultural context. This form of SGR is called "koro-like" (koro-like symptoms, KLS). In contrast to the Asian form, KLS are not observed in healthy subjects, but as an unspecific syndrome related to other neuropsychiatric illnesses. In this review, we compare both forms of the SGR in terms of symptoms, cultural aspects and therapeutic strategies.

[Koro-like symptoms in a recurrent depressive disorder]

We report the case of a German male with a major depressive episode who also suffered from the terrifying perception that his penis was shrinking. These so-called koro-like symptoms (KLS) had also been present in earlier depressive episodes and subsided in the symptom-free interval of the recurrent depressive disorder. Under sufficient antidepressant medication with venlafaxine and lithium not only KLS but also the depressive symptoms remitted. The course of illness provides further evidence that KLS are not a distinct clinical entity in Western countries, but represent a concomitant syndrome that requires treatment of the underlying illness.