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The result of treatment on vestibular and general pain thresholds in women with provoked vestibulodynia
Bohm-Starke N, Brodda-Jansen G, Linder J, Danielsson I
The Clinical Journal of Pain 2007 Sep;23(7):598-604
clinical trial
4/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

OBJECTIVE: To correlate changes in vestibular pain thresholds to general pain thresholds in a subgroup of women with provoked vestibulodynia taking part in a treatment study. METHODS: Thirty-five women with provoked vestibulodynia were randomized to 4 months' treatment with either electromyographic biofeedback (n = 17) or topical lidocaine (n = 18). Vestibular and general pressure pain thresholds (PPTs) were measured and the health survey Short Form-36 (SF-36) was filled out before treatment and at a 6-month follow-up. Subjective treatment outcome and bodily pain were analyzed. Thirty healthy women of the same age served as controls for general PPTs and SF-36. RESULTS: No differences in outcome measures were observed between the 2 treatments. Vestibular pain thresholds increased from median 30 g before to 70 g after treatment in the anterior vestibule (p < 0.001) and from median 20 to 30 g in the posterior vestibule (p < 0.001). PPTs on the leg and arm were lower in the patients as compared with controls both before and at the 6-month follow-up. Patients reporting total cure were 3/35; 25/35 were improved. The number of patients who frequently reported of other bodily pain was reduced after the treatment. The patients had lower scores for SF-36 (General Health, Vitality) before treatment, which was restored at the 6-month follow-up. DISCUSSION: Treating provoked vestibulodynia by either topical lidocaine or electromyographic biofeedback increased vestibular pain thresholds, reduced dyspareunia, and improved bodily pain. The patients showed a general hypersensitivity to pressure pain compared with controls and in this study the hypersensitivity did not seem to be affected by treating the superficial dyspareunia.

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