Chronic Vulvar Pain Without Clear Cause
Vulvar pain lasting three months or more, with no infection or lesion found.
- ≥3 mo: Diagnostic duration (pain must persist this long)
- ~8–10%: Prevalence (lifetime) (of women, any age)
- ~5 yrs: Average diagnosis delay (symptom onset to diagnosis)
- None: Identifiable cause found (by definition, exclusionary diagnosis)
A pain disorder, not an infection
Vulvodynia is pain itself, once infection and skin disease are ruled out.
Underdiagnosis is common
Many patients see several clinicians before receiving a name for their pain.
Central and peripheral sensitization
Nerve endings and spinal pathways both become abnormally sensitive over time.
Localized vs Generalized Pain Distribution
A cotton swab lightly presses points around the vulva to chart where pain lives.
- ~80%: Localized subtype (of vulvodynia cases)
- ~20%: Generalized subtype (of vulvodynia cases)
- Vestibule: Most common localized site (entrance to the vagina)
- 6–8: Swab test points (standard mapped positions)
Localized pain clusters
Pain concentrates in one small region, most often the vestibule.
Generalized pain spreads
Pain diffuses across the entire vulva without one clear hotspot.
Mapping guides treatment choice
Distribution pattern shapes which topical and procedural options fit best.
Provoked vs Unprovoked Pain
Provoked pain needs contact; unprovoked pain is constant regardless of touch.
- Touch: Provoked trigger (intercourse, tampon, exam)
- Constant: Unprovoked pattern (present at rest, unpredictable)
- Common: Mixed presentation (both patterns can overlap)
- Provoked: Localized subtype link (usually touch-triggered)
Provoked localized vulvodynia
Contact at the vestibule sets off a sharp, burning pain response.
Unprovoked generalized vulvodynia
Diffuse burning persists without any touch or pressure trigger.
Pattern informs testing
Clinicians repeat the swab test to confirm which pattern dominates.
Pelvic Floor Muscle Hypertonicity
Tight, guarded pelvic floor muscles feed a cycle that worsens vulvar pain.
- >90%: Pelvic floor involvement (of vulvodynia patients)
- Elevated: Resting muscle tone (vs healthy controls)
- Self-reinforcing: Pain-guarding cycle (pain tightens muscle, and back)
- Levator ani: Key muscle group (primary pelvic floor sling)
Muscles guard against anticipated pain
Fear of pain makes pelvic floor muscles clench protectively.
Tight muscles reduce blood flow
Sustained tension starves tissue of oxygen and worsens sensitivity.
A feedback loop forms
Pain and muscle tone reinforce each other without intervention.
Topical Agents Plus Pelvic Floor Physical Therapy
Combining topical treatment with physical therapy relaxes muscle and lowers pain.
- ~70%: Response to combined therapy (meaningful pain reduction)
- 8–12 wk: Typical PT course (weekly sessions)
- Lidocaine: First-line topical agent (applied before contact)
- Biofeedback: PT technique (trains muscle relaxation)
Topical agents calm the nerve
Lidocaine and compounded creams blunt the local pain signal.
Physical therapy retrains the muscle
Manual release and biofeedback lower resting pelvic floor tone.
Gains build gradually
Most patients need several weeks before pain meaningfully drops.