title: Nature and origin of "squirting" in female sexuality.
abstract: BACKGROUND
  During sexual stimulation, some women report the discharge of a noticeable amount of fluid from the urethra, a phenomenon also called "squirting." To date, both the nature and the origin of squirting remain controversial. In this investigation, we not only analyzed the biochemical nature of the emitted fluid, but also explored the presence of any pelvic liquid collection that could result from sexual arousal and explain a massive fluid emission.
  
  
  METHODS
  Seven women, without gynecologic abnormalities and who reported recurrent and massive fluid emission during sexual stimulation, underwent provoked sexual arousal. Pelvic ultrasound scans were performed after voluntary urination (US1), and during sexual stimulation just before (US2) and after (US3) squirting. Urea, creatinine, uric acid, and prostatic-specific antigen (PSA) concentrations were assessed in urinary samples before sexual stimulation (BSU) and after squirting (ASU), and squirting sample itself (S).
  
  
  RESULTS
  In all participants, US1 confirmed thorough bladder emptiness. After a variable time of sexual excitation, US2 (just before squirting) showed noticeable bladder filling, and US3 (just after squirting) demonstrated that the bladder had been emptied again. Biochemical analysis of BSU, S, and ASU showed comparable urea, creatinine, and uric acid concentrations in all participants. Yet, whereas PSA was not detected in BSU in six out of seven participants, this antigen was present in S and ASU in five out of seven participants.
  
  
  CONCLUSIONS
  The present data based on ultrasonographic bladder monitoring and biochemical analyses indicate that squirting is essentially the involuntary emission of urine during sexual activity, although a marginal contribution of prostatic secretions to the emitted fluid often exists.
authors.affiliation: Department of Gynaecology and Obstetrics, Hopital Privé de Parly 2, Le Chesnay, France; AIUS (Association Inter disciplinaire post Universitaire de Sexologie), Pérols, France.
authors.forename: Samuel
authors.initials: S
authors.lastname: Salama
authors.forename: Florence
authors.initials: F
authors.lastname: Boitrelle
authors.forename: Amélie
authors.initials: A
authors.lastname: Gauquelin
authors.forename: Lydia
authors.initials: L
authors.lastname: Malagrida
authors.forename: Nicolas
authors.initials: N
authors.lastname: Thiounn
authors.forename: Pierre
authors.initials: P
authors.lastname: Desvaux
mesh_terms: D000328:Adult; D003075:Coitus / Q000502:physiology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D010388:Pelvis; D014463:Ultrasonography; D014521:Urethra / Q000502:physiology; D001743:Urinary Bladder / Q000000981:diagnostic imaging / Q000502:physiology; D014554:Urination
keywords: Female Ejaculation; Female Orgasm; Gushing; Squirting; Urinary Incontinence