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From a case report, this paper reviews our present knowledge about the links between a past history of sexual abuse during childhood, and a clinical presentation of abdominoperineal dyssynergia (urethrismus, or vesicourethral dyssynergia; vaginismus; anismus or rectosphincteric dyssynergia). Desomatization occurred when the patient, who was suffering from psychogenic urinary retention, became asymptomatic suddenly through the proper words, at a proper time, that made her realize how she had somatized when her father told her to shut up. The paper reviews the now abundant (27 publications) literature on the subject of sexual abuse and its link to lower gastrointestinal tract dysfunction. Fifty percent of these people have been abused, and their main complaints are constipation, diarrhoea, and/or chronic abdominal pain. The paper reminds that anorectal motility is distinctly perturbed after sexual abuse, and thus, that the theory of false memory has to be evaluated with some perspective. Ninety percent of the medical community is unaware of the problem, and very reluctant to face it. Thus, the papers describe avenues of diagnostic modalities and particularly ways of treatment, when a pelvic floor dysfunction is linked to a history of sexual abuse. Finally, the paper explores the deep nature of this type of pathology, and its association to difficulties in gender identity.