Clinical overview
Vestibulodynia — historically called "vulvar vestibulitis syndrome" until the ISSVD 2015 terminology revision removed the "-itis" because the disorder is not primarily inflammatory — is one of the commonest causes of dyspareunia in young women and a frequent reason for new gynaecology referrals. The clinical hallmark is well-localised pain at the vulval vestibule provoked by touch, intercourse, tampon insertion, or even tight clothing. The pain is severe, the impact on intimate relationships and quality of life is profound, and the natural history without intervention is often years of unrecognised suffering.
ISSVD (International Society for the Study of Vulvovaginal Disease) classifies vulvar pain into:
- Vulvodynia — vulval pain of at least 3 months' duration without a clear identifiable cause.
- Vulval pain caused by a specific disorder — infectious, inflammatory, neoplastic, neurologic, trauma, hormonal, iatrogenic.
Vulvodynia is further subdivided by:
- Location: localised (vestibulodynia, clitorodynia) or generalised.
- Provocation: provoked, spontaneous (unprovoked), or mixed.
- Onset: primary (since first attempt at vaginal entry) or secondary (developing after a period of pain-free intercourse).
- Temporal pattern: intermittent, persistent, constant, immediate, delayed.
This chapter focuses on vestibulodynia (the localised, often provoked form) and on the broader clinical entity of "vestibulitis"/vulval vestibular pain syndromes, including inflammatory and infectious causes.
Core knowledge
Anatomy and innervation
Vestibular pain localises to the mucosa at the introitus, especially the posterior vestibule with dense pudendal sensory endings.
The vulval vestibule is the area medial to Hart's line on the inner labia minora, extending around the vaginal introitus. It contains the urethral meatus, Skene's ducts, Bartholin's gland openings, and the hymeneal remnants. The vestibule is embryologically derived from the urogenital sinus (endodermal origin, unlike the ectodermal labial skin), with sparse keratinisation and high density of free nerve endings.
Innervation: pudendal nerve (S2–S4) — perineal branch supplying labia minora and posterior vestibule; ilioinguinal nerve anteriorly.
Causes ("vestibulitis" differential)
Vestibular pain is a syndrome: exclude infection, dermatoses, hypoestrogenism, neural pain, trauma and neoplasia before calling it idiopathic vestibulodynia.
Infections:
- Candidiasis: chronic or recurrent vulvovaginal candidiasis with hyperaesthesia. See candidiasis.
- Herpes simplex virus: primary herpes presents with vesicles, ulcers, dysuria, lymphadenopathy; HSV-2 most common.
- Trichomoniasis: frothy discharge, intense itch, "strawberry cervix."
- Bacterial vaginosis with vestibular involvement.
- Streptococcal vulvitis (group A or B) — bright erythema, intense pain.
- HPV — condylomata with associated discomfort.
- Bartholin's gland infection (see acute-pelvic-infection).
Dermatological:
- Contact dermatitis — allergic or irritant. See contact-dermatitis.
- Lichen sclerosus (see lichen-sclerosus) — typically older women, may affect vestibule.
- Lichen planus — erosive form involves vestibule and vagina; characteristic Wickham's striae; mucosal disease elsewhere.
- Psoriasis — inverse psoriasis of vulva.
Inflammatory/autoimmune:
- Behçet's disease — recurrent oral and genital ulcers.
- Erosive lichen planus.
- Plasma cell vulvitis (Zoon) — well-demarcated red-orange patches.
- Crohn's disease — vulval involvement uncommon but recognised.
Pigmentary/Neoplastic:
- Vulval intraepithelial neoplasia, melanoma, vulval carcinoma — see vulval-carcinoma and vulvar-epithelial-hyperplasia.
Hormonal:
- Genitourinary syndrome of menopause (atrophic vestibulitis) — postmenopausal, dryness, atrophic mucosa.
- Combined hormonal contraception — lower serum testosterone may contribute to vestibulodynia in susceptible women (controversial).
- Breastfeeding hypoestrogenism.
Neurological:
- Pudendal neuralgia.
- Post-herpetic neuralgia.
Iatrogenic/Trauma:
- Post-surgical scarring (episiotomy site dyspareunia after OASIS repair; perineal repair).
- Post-radiotherapy.
- Female genital cutting/mutilation — see gender-based-violence for broader context.
Vestibulodynia (idiopathic). When all the above are excluded, the diagnosis is provoked vestibulodynia. Mechanisms involved:
- Increased density of nociceptive nerve endings in the vestibular mucosa.
- Local mast cell activation.
- Central sensitisation.
- Hormonal (possible role of androgen receptor expression in vestibular tissue).
- Pelvic floor hypertonicity contributing.
- Psychological/sexual factors (catastrophising, anxiety) — modulators, not primary causes.
Clinical presentation
Classic vestibulodynia:
- Burning, raw, or sharp pain on touch to the vestibule.
- Pain on attempted intercourse (often impossible to penetrate), tampon insertion, gynaecological examination.
- Specifically, pain on cotton swab pressure to the posterior vestibule (4–8 o'clock especially).
- Pain often described as "knife-like" or "burning."
- May coexist with vaginismus (involuntary pelvic floor spasm).
- Significant impact on relationships, mood, self-image.
Infectious presentations:
- Candidiasis: itch + thick white discharge + erythema + fissures.
- HSV: vesicles → ulcers + flu-like prodrome + lymphadenopathy.
- Strep: bright erythema + severe pain ± fever.
Assessment
History
- Onset (primary vs secondary), duration, time course.
- Provocation: tampons, intercourse, tight clothing, sitting, examination.
- Spontaneous pain (vs purely provoked).
- Discharge, bleeding, itch, dysuria.
- Sexual history, partner symptoms, condom use.
- Hygiene practices, soap/wipe use, lubricant use, douching.
- Hormonal status: contraception, breastfeeding, menopausal symptoms.
- Mood, relationships, prior trauma.
- Previous treatments and their effects.
Examination
The cotton swab test maps provoked vestibular pain, with maximal tenderness classically at the posterior 5-7 o'clock vestibule.
A gentle, structured exam with explanation throughout:
- Inspection: erythema, lichenification, fissures, ulcers, lesions, atrophy, scarring, FGC.
- Cotton swab test (Friedrich's criteria — pioneering work for vestibulodynia diagnosis):
- Touch with moistened cotton swab at multiple vestibular points (3, 5, 6, 7, 9 o'clock).
- Patient grades pain 0–10.
- Posterior vestibule (5–7 o'clock) is most commonly affected.
- Speculum exam: only if tolerated; use smallest speculum; consider gel or lignocaine.
- Bimanual: assess pelvic floor tone (often hypertonic); identify trigger points.
Investigations
- High vaginal swab + endocervical swab: candida, trichomonas, BV, chlamydia, gonorrhoea, M. genitalium (PCR).
- HSV PCR from any ulcer/vesicle.
- Patch testing for suspected contact dermatitis.
- Biopsy: for any lesion that does not fit a clear diagnosis, especially if persistent or pigmented (rule out VIN, melanoma).
- Hormonal profile if hypoestrogenism suspected.
Management
Treat identifiable cause
- Candidiasis: topical clotrimazole or oral fluconazole; for recurrent disease, maintenance fluconazole 150 mg weekly for 6 months.
- HSV: aciclovir (400 mg TDS for 5 days for first episode; suppressive therapy if frequent recurrences).
- Trichomonas: metronidazole 2 g stat; treat partner.
- Strep: penicillin or amoxicillin.
- Lichen sclerosus: topical clobetasol propionate 0.05%.
- Atrophic vulvitis: topical estriol cream; consider DHEA.
- Contact dermatitis: identify and remove allergen/irritant; topical steroid short course.
Vestibulodynia (idiopathic)
Lifestyle and supportive:
- Education about the condition — diagnosis itself often therapeutic.
- Avoid irritants: scented soaps, wipes, fabric softeners; wear loose cotton underwear.
- Cool gel packs; avoid heat.
- Adequate lubrication if attempting intercourse.
Pelvic floor physiotherapy — strong evidence; addresses pelvic floor hypertonicity and gives the patient agency.
Topical therapies:
- Lignocaine 5% ointment applied to vestibule before intercourse or 20 minutes pre-procedure.
- Compounded gabapentin or amitriptyline cream (specialist).
- Topical oestrogen if hypoestrogenic.
Systemic therapies (neuromodulators):
- Tricyclics — amitriptyline 10–25 mg nocte, titrating.
- Gabapentin or pregabalin.
- SNRI (duloxetine) — limited evidence specifically but useful for coexisting mood.
Psychosexual therapy:
- CBT for vulvodynia — moderate-to-strong evidence.
- Couples therapy where appropriate.
Surgical (vestibulectomy):
- Posterior vestibulectomy with vaginal advancement flap.
- Reserved for severe localised provoked vestibulodynia refractory to non-surgical management.
- Success rates ~60–80% in selected cases.
- Done in specialist centres.
Multidisciplinary care — gynaecologist, pelvic floor physiotherapist, pain specialist, psychologist/psychosexual therapist. This is the gold standard approach.
Counselling
- Be explicit about the chronic and often relapsing nature.
- Set realistic expectations: improvement in 60–80% with combined therapy; not always cure.
- Address relationship impact; involve partner if she wishes.
Red flags / pitfalls
- Dismissing dyspareunia as psychological — there is almost always a treatable component.
- Missing chronic candidiasis — recurrent thrush often presents as vestibular pain rather than discharge.
- Not doing the cotton swab test — quick, diagnostic, often missed.
- Topical steroid without diagnosis — can worsen candida.
- Surgery as first-line for idiopathic vestibulodynia — non-surgical management first.
- Missing lichen sclerosus — biopsy if any white/sclerotic change.
- Missing erosive lichen planus — mucosal disease elsewhere; biopsy.
- Not addressing pelvic floor — single most under-treated component.
- Failing to ask about trauma history — gentle structured enquiry.
Evidence anchors
- Bornstein J, et al. 2015 ISSVD, ISSWSH, IPPS Consensus Terminology and Classification of Persistent Vulvar Pain and Vulvodynia.
- Goldstein AT, et al. Vulvodynia: Assessment and Treatment. J Sex Med 2016.
- ACOG Committee Opinion No. 673 — Persistent vulvar pain.
- RCOG Green-top Guideline (Patient information) on Vulval Pain.
- British Society for the Study of Vulval Disease (BSSVD) guidelines.
- Cochrane: Pelvic floor muscle training for vulvodynia.