Effects of testosterone suppression on desire, hypersexuality, and sexual interest in children in men with pedophilic disorder

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Abstract
Effects of testosterone withdrawal on significant correlates of paedophilic disorder (PeD) are largely unknown. The purpose of this study was to explore in detail the effects of testosterone suppression from degarelix as compared to placebo on desire, hypersexuality, and subjectively experienced sexual interest in participants with PeD. We compared the sexual effects of degarelix, a GnRH antagonist, on men with PeD assigned to degarelix (n = 26) or placebo (n = 26) in a double-blind randomised clinical trial. Sexual Desire Inventory scores decreased significantly at two weeks (between-group difference p = 0.001, d = −0.96 [-0.38 to −1.55) and ten weeks (p < 0.001, d = −1.30 [-0.69 to −1.91) in participants assigned degarelix, whereas HBI ratings did not differ significantly at two weeks (p = 0.07, d = −0.52 [0.05 to −1.08), but did so at ten weeks (p = 0.01, d = −0.72 [-0.15 to −1.29). Fifteen out of 26 (58%) individuals in the group assigned degarelix and 3 out of 26 (12%) in the group assigned to placebo reported no further sexual interest in children at ten weeks (Fisher’s exact test, p < 0.0001), an effect unmodified by autistic, antisocial, or impulsive traits, age, age at onset of, or duration of paedophilic attraction.
Funding Information
  • Fredrik och Ingrid Thurings Stiftelse
  • Research Unit of Skaraborg Hospital
  • Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet
  • ALF agreement between the Swedish government and the country councils
  • Stiftelsen Söderström Königska Sjukhemmet
  • Svenska Läkaresällskapet

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