Chapter 26: Assessment of Vulvar Pain and Vulvodynia

Welcome to Last Minute Lecture.

This free chapter overview is designed to help students review and understand key concepts.

These summaries supplement, not replace, the original textbook and may not be redistributed or resold.

For complete coverage, always consult the official text.

Imagine a patient sitting in your exam room,

she's terrified.

Not just a little nervous, but visibly trembling.

Her shoulders are hiked all the way up to her ears at the mere sight of the speculum resting on your train.

Right, and if you look closely, you can just read this profound exhaustion in her body language.

I mean, she has likely been to three, maybe four providers before she ever even made it to your clinic.

Exactly.

And well, here is the truly tragic part.

Every single one of those previous clinicians has told her that her debilitating, life -altering pelvic pain is basically all in her head.

Or even worse, they gave her a pat on the arm and told her to just go home, drink a glass of wine and try to relax.

It is a devastating clinical scenario, and unfortunately for the advanced practice and nursing students listening to us right now, it is a scenario you are absolutely going to face when you step into your clinical rotations.

Which is exactly why we are here today.

Welcome to a very special deep dive from the Last Minute Lecture team.

If you are gearing up for clinicals or staring down a massive women's health exam,

you have come to the right place.

Sure.

Today's mission is Mastering Chapter 26, the assessment of vulvar pain and vulvodynia.

We are going to take all those dense clinical pathways you've been studying and translate them into a logical, student -friendly process.

The goal here is really to connect the dots.

We want to link the patient's history directly to your focused examination, use that examination to drive your clinical interpretation.

And then let that interpretation naturally guide your initial management steps.

So by the time we're done, you'll know exactly what to look for, what those findings mean, and most importantly, why they matter for that terrified patient.

So let's set the stage, because the prevalence of this issue is frankly staggering in the text.

16 % of women report chronic vulvar pain lasting three months or longer.

It's incredibly common.

And a quarter of all women will experience it at some point in their lifetime.

Yet here is the statistic from the chapter that should completely shift how you view

this.

39 % of women who suffer from these symptoms never seek treatment.

Yeah.

Almost 40%.

Exactly.

They stay silent because of embarrassment, shame, or honestly because they've already received those poor responses from clinicians who just didn't understand the pathophysiology of what they were looking at.

So let's fix that knowledge gap right now.

We need to start with a very clear clinical dividing line.

When you are looking at these cases, the text says you are distinguishing between two terms, vulvar pain and vulvodynia.

Right.

So vulvar pain is related to a specific identifiable disorder.

If you look at the tissue, you can see a clear culprit.

Like an infection or something.

Exactly.

That could be a raging yeast infection, an inflammatory skin condition, a neoplasm, or a specific neurologic injury.

I can see the cause.

Okay, I got it.

Vulvodynia, on the other hand, is defined as vulvar pain in the absolute absence of relevant visible findings or a clinically identifiable disease.

I always like to think of vulvodynia like a car's check engine light suddenly flashing red on your dashboard.

You pull over, the mechanic opens the hood, and the engine looks completely flawless.

Like there's no smoke, no visible trauma, no broken belts.

But that alarm system is still blaring loudly.

That is a brilliant way to conceptualize it.

And to understand why that check engine light is stuck in the on position, you have to look past the hardware and examine the wiring.

The nervous system.

Right.

You need to understand the neurobiology of this pain before you can even begin asking the patient the right questions in your history.

Let's get into that wiring because the text breaks this down nicely.

The tissue here is innervated by two specific types of sensory nerve fibers.

C nerve fibers and A nerve fibers.

Yeah, let's start with the A nerve fibers.

Those are myelinated because they have that protective insulation.

They transmit signals quickly and they handle sensations like deep pain, pressure, and warmth.

Okay, so A fibers are the fast insulated ones?

Exactly.

But the C nerve fibers are non -myelinated.

They're essentially exposed wires responsible for transmitting sensations of itching and light pain.

And here's where that check engine light malfunctions, right?

When those unmyelinated C nerve fibers experience trauma or chronic inflammation, the inflammatory cytokines surrounding them start firing repeatedly.

Spot on.

And when nerves fire continuously like that, it actually lowers the threshold for what the brain perceives as pain.

This creates a state of central sensitization.

Which leads to alladenia.

Yes.

You will see alladenia constantly in these patients.

Alladenia means the patient experiences severe pain from a stimulus that shouldn't be painful at all.

Like what?

Like something as simple as the light touch of a cotton swab or the friction of wearing denim jeans.

To them, it literally feels like a blowtorch.

Geez.

So now that you as the clinician understand the underlying wiring issue, that their nervous system itself is just hyperreactive, it completely changes how you take their history.

It really does.

You realize you need to listen very carefully to how they describe the sensation.

Because you'll hear heartbreaking, incredibly specific complaints straight out of box 26 .2 in the chapter.

Oh, absolutely.

A patient might say, it feels like sandpaper down there.

Or I have a disgruntled vagina.

Or simply, I can't even attempt to use tampons because it hurts too much.

This is where you put your investigative hat on as a student.

You have to categorize this pain.

First, you ask, is it provoked or spontaneous?

Meaning does it only hurt when something physically touches the vestibule?

Or is it burning all day long even when they're just sitting perfectly still?

Right.

You also need to know the timeline.

Is it primary?

Meaning it has always hurt since the very first time they attempted to use a tampon or have intercourse.

Or is it secondary?

Meaning they had years of pain -free experiences and this developed suddenly later in life.

And then, you also must define the exact geography of the pain.

Is it generalized across the entire vulva or localized to one specific spot?

Yeah.

And if it involves intercourse, you need to ask a very specific question.

Does the pain happen with initial penetration right at the entrance?

Or is it deep pelvic pain during thrusting?

Those point to entirely different physiological issues.

And your history doesn't stop at the pelvis.

The chapter emphasizes doing a full review of systems.

You're checking for urinary issues, gastrointestinal complaints like chronic constipation.

Musculoskeletal back pain is a big one.

And you absolutely must assess their psychological state.

Chronic pain drastically increases the risk for severe anxiety and depression.

You also need to review their current medication list with a fine -tooth comb.

Wait, hold on.

Let's look at this practically.

I can understand checking for like previous antibiotics that might have caused a yeast infection.

Sure.

But the text says we need to be scrutinizing their chart for basic daily medications like a beta blocker or a diuretic like hydrochlorothiazide.

How does a heart medication end up causing severe pelvic pain?

It's crazy, but it is a phenomenal catch to make in clinic.

Certain common systemic medications, specifically NSAIDs, beta blockers, and hydrochlorothiazide are strongly associated with causing lichenoid -like eruptions on mucous membranes.

Wait, really?

So the pill they take every single morning for their blood pressure could be chemically inducing a painful inflammatory rash right on their vulva.

Exactly.

And if you miss that on the history, you might spend months prescribing topical treatments that just fail.

Sometimes collaborating with their primary care provider to swap out that blood pressure medication for a month -long trial is the master key to resolving their pelvic pain entirely.

That is the exact kind of clinical pearl that separates a good student from a great clinician.

Okay, so you've taken this incredibly empathetic detailed history.

You've reviewed their meds.

Now your instinct is to immediately examine the source of the pain.

But you don't.

Right.

The actual physical exam begins before you ever put the patient in stirrups.

It has to.

You begin with a non -genital physical exam.

You evaluate their general appearance.

You check their thyroid.

You check their skin for rashes.

You look at their nails for pitting.

And most importantly, you ask them to open their mouth.

Which seems completely counterintuitive.

Why am I looking in their mouth for a pelvic pain complaint?

Because you are checking their oral mucosa for ulcers, cold sores, or something called wiccum striae.

Right, wiccum striae.

Yeah, it presents us this very distinct reticular lacy white web on the inside of the cheeks or gums.

If you spot that white lacy pattern in the mouth, you have just found a massive diagnostic clue.

Because it's a hallmark sign of lichen planus.

Exactly.

Lichen planus is a systemic inflammatory condition that frequently attacks both the mouth and the vulva simultaneously.

Oh wow.

So once you've checked the mouth and the skin, you finally move to the external pelvic exam.

And you do this systematically.

Moving anteriorly to posteriorly.

Starting up high.

Yeah, near the abdomen at the mons pubis and the labia majora.

Here you are just observing.

You are looking at hair distribution.

You are checking the natal cleft for any fissuring or splitting of the skin, which, as you can imagine, can be incredibly painful.

Then you move slightly inward to the labia minora and the clitoris.

This is where you are hunting for architectural changes.

And this part is wild to me.

Certain inflammatory dermatosis, like lichen planus and lichen sclerosis,

don't just irritate the skin.

If left untreated, they cause agglutination.

Agglutination is basically scarring and fusing of the tissue.

Over time, the chronic inflammation causes the delicate tissue of the labia minora and the clitoral hood to actually resort.

Wait, resort?

Like it disappears?

Yeah.

The anatomical structures can literally flatten, fuse together, or appear to disappear entirely, burying the clitoris under scar tissue.

Jeez.

It really emphasizes why catching this early is so vital.

So moving further inward, you reach the vescule right at the opening of the vagina.

This is where you take a simple cotton swab and perform a targeted touch test.

Right.

You gently press the swab against different clock face points of the vestibule.

You are testing for that allodinia we discussed earlier.

And hyperpathy.

Right.

Where a stimulus causes way more pain than expected.

Exactly.

You want to see if the light pressure of the cotton causes a disproportionate burning pain response from those hyperreactive C fibers.

While you are evaluating this external architecture, you also need to assess the patient's muscle tone for pelvic floor dysfunction, or PFD.

Many women with chronic vulvar pain develop hypertonicity.

Their pelvic floor muscles are locked in a constant defensive state of tension, which brings up a critical safety precaution from the text for your exam.

If you suspect pelvic floor hypertonicity, you must be incredibly careful about asking the patient to perform a standard Kegel exercise.

Wait, a Kegel is the most basic pelvic floor assessment we learn.

Why is asking them to contract that muscle suddenly a bad idea here?

Think about the physiology of a cramp.

These patients are often entirely unaware of how much tension they are holding.

If you ask them to Kegel, they can squeeze and contract the muscle just fine.

The problem is their release.

They can't let it go.

Right.

The muscle is already so exhausted and tight that they cannot drop down back to a normal resty state.

So asking them to bear down and squeeze an already exhausted hypertonic muscle can trigger a massive severe pain spasm right there on the table.

Exactly.

You could flare their pain for days.

You must evaluate muscle tone with extreme caution and gentleness.

Okay, so we've evaluated the external architecture and the muscle tone.

Now the exam moves internally to assess the vaginal environment and gather objective lab data.

And for a patient already in pain, choosing the right equipment is crucial.

The text prefers using a narrow, virginal -sized speculum.

Once you have visual access, you are collecting samples for the diagnostic triad, the wet mount, the potassium hydroxide or KOH prep, and the pH evaluation.

Let's talk about the microscopic evaluation because there is a massive clinical pitfall here when it comes to yeast.

Oh, this is such a good point.

We've all been taught to look for yeast buds and hyphane on a wet mount.

But the chapter explicitly states that if you rely solely on your eyes and the microscope, you are going to miss the diagnosis 60 to 70 % of the time.

It's true.

Yeast is notoriously difficult to spot on a standard wet mount, which means if a patient has textbook itching and clumpy white discharge but the microscope is clear,

a culture is absolutely imperative.

And when you order that culture, you have to specifically request speciation.

We know that 80 to 90 % of yeast infections are caused by candida albicans, but if your patient had that other 10 to 20 % at non -albicans yeast,

the standard over -the -counter or oral antifungal medications will not work.

You'll just be throwing medication at a resistant strain while the patient continues to suffer.

Speciation is key.

Now let's talk about interpreting the rest of that wet mount data from table 26 .1.

I think the best way to visualize the vaginal environment is to think of it like a delicate soil ecosystem.

You are basically taking a chemical test and a soil sample to see what is growing in the garden.

I love that analogy.

Let's define a healthy ecosystem first.

A normal vaginal environment has a perfectly balanced pH between 3 .8 and 4 .6.

Nice and acidic.

Yeah.

And when you look at the soil sample under the microscope, you should see mature epithelial cells.

These look like large, flat, healthy paving stones.

And you'll see a quiet immune system, meaning about a one -to -one ratio of white blood cells to those epithelial cells.

So table 26 .1 is essentially a sorting hat for vaginitis.

What happens when the ecosystem gets invaded?

If you test the pH and it's suddenly elevated greater than 4 .6, you know the normal healthy flora has been disrupted.

Your next step is to look at the microscope to see how it was disrupted.

Let's say the pH is high.

You look at the slide and you see something called Clue cells.

Clue cells.

A Clue cell is a standard squamous epithelial cell that is completely covered in a fuzzy layer of adherent bacteria.

It literally looks like a skin cell dusted in powdered sugar.

But interestingly, when you look around that Clue cell, there is no massive swarm of white blood cells.

The immune system hasn't mounted a major inflammatory response.

High pH, fuzzy Clue cells, but uniquely zero mucosal inflammation.

That specific combination points you directly to bacterial vaginosis, or BV.

Exactly.

But what if the ecosystem looks completely different?

What if the pH is high, but the slide is absolutely packed with white blood cells, a ratio way higher than 1 to 1, and the patient's actual vaginal walls are visibly red and inflamed?

Now you are dealing with a heavily inflammatory condition, and you have a few differentials to work through based on the specific discharge and cell types.

It could be trichomonas.

Which presents with a classic frothy green or yellow discharge, right?

Yeah, and you can actually see the little flagellated trichomonads swimming on the slide.

Wow.

If it's not Trish, it could be Dyswamid of inflammatory vaginitis, or DIV.

This causes a profuse, sticky yellow discharge, and under the microscope, alongside all those white blood cells, you'll see parabacil cells.

Parabacil cells are immature, round, deeper skin cells.

They only show up on a wet mount when the mature, superficial top layers of the vaginal lining have been stripped away or disquamated by severe inflammation.

But here's a tricky scenario for an exam.

Clinically and microscopically, DIV looks almost identical to atrophic vaginitis.

They both have an elevated pH, they both have yellow discharge, they both have lots of white blood cells, and they both feature those deep, immature, parabital cells.

How do you tell them apart?

The key is the patient's history, specifically their estrogen status.

Atrophic vaginitis, which modern guidelines from the ISSWSH and AMS now refer to as janitorinary syndrome of menopause, or GSM, is fundamentally driven by a lack of estrogen.

Okay, so you ask yourself, is this patient postmenopausal?

Is she currently breastfeeding?

Is she using an injectable progesterone like Dipoprovera that suppresses estrogen?

Exactly.

If the answer is yes, you lean toward GSM because the ecosystem is simply starved of its primary nutrient, which is estrogen.

But if the patient is 30 years old, has perfectly normal estrogen levels, and has this massive inflammation, you lean toward DIV.

That makes total sense.

You're synthesizing the history, the physical exam, and the microscopy to build your differential diagnosis.

Speaking of differentials, let's briefly touch on the external inflammatory dermatosis, the lichens we mentioned earlier.

We talked about lichen planus with the oral wiccum striae and the bright red, exquisitely tender erosions.

But there are two others to know.

First is lichen sclerosis.

This is an autoimmune -linked condition that is 10 times more common in women.

It is critical to monitor because it carries a 4 -5 % risk of developing into squamous cell carcinoma.

Right.

And classically, that presents with a keyhole pattern of white, dry, tissue paper thin skin surrounding the vulva and the anus.

And the other is lichen simplex chronicus.

Dermatologists often call this the itch that rashes.

It starts with an irritant, but the primary issue becomes a brutal cycle of itch -scratch -itch.

Right.

The constant, desperate scratching actually changes the architecture of the skin, causing it to become thick and leathery, a process called lichentification.

Aside from the dermatosis, your differential should also include neurologic conditions.

The classy example is pudendal neuralgia.

Okay, what's that?

This is a very specific nerve entrapment or irritation that causes a burning, constant pain.

But it has a fascinating clinical hallmark.

The pain is often relieved only when the patient sits on a toilet seat.

Wait, really?

Why a toilet seat?

Because the physical cutout of the toilet seat relieves the direct physical pressure on the pudendal nerve.

Oh, wow.

That is such a specific history question to keep in your back pocket.

So you've done the work.

You have a diagnosis.

Now you have to design a management plan, referencing table 26 .2.

And the most important first step is expectation management.

You have to be honest with the patient.

There is rarely a quick fix for chronic vulvar pain.

Treatment takes weeks, months, or even years of trial and error.

Your relationship with the patient, your empathy in patients, is a therapeutic intervention all on its own.

Management always begins with foundational lifestyle changes.

You want to protect that vulnerable tissue ecosystem.

That means cool sitz baths, sealing the area with a barrier -like petrolatum to protect it from urine, wearing 100 % cotton underwear.

And sometimes even adopting a low oxalate diet, or using calcium citrate supplements to bind irritating oxalates in the urine.

From there, we move to topical pain treatments.

5 % lidocaine ointment is frequently used to temporarily numb the area,

or EMLA cream, which is a combination of lidocaine and prelocaine.

Right.

OK, wait.

Let's think about this from the patient's perspective.

The text explicitly says lidocaine causes burning.

If a patient is already experiencing 10 out of 10 burning alladenia, and you prescribe a topical anesthetic, isn't that medication going to sting the second it touches that raw tissue while they just panic and wash it off?

They absolutely will panic, which is why counseling is vital.

Lidocaine will cause significant burning and stinging for the first 5 to 10 minutes before the numbing effect ticks in.

You must instruct them to apply it to a tiny test spot first, so their nervous system isn't overwhelmed.

And there's a clinical workaround for this, right?

Because commercial lidocaine creams often contain alcohol,

or propylene glycol, which burns even worse.

Exactly.

You should utilize a compounding pharmacy.

A compounding pharmacist can take the active lidocaine and mix it into a neutral, non -irritating base, bypassing all those harsh commercial preservatives.

That's super smart.

If topicals aren't cutting it, we escalate to systemic pharmacologic management.

And it's fascinating because the drugs we use for vulvodynia aren't standard painkillers like ibuprofen.

We use medications that directly target those misfiring e -fibers and calm down the central sensitization.

Right.

We are trying to quiet the nervous system.

We often start off label with tricyclic antidepressants like ematryptaline.

You start at a very low dose, 10 milligrams at bedtime, and slowly titrate up to a max of 150 milligrams.

You watch for anticholinergic effects, right?

Yes.

The goal isn't to treat depression with these.

The goal is to alter how the nerves transmit pain signals.

We also use anticonvulsants like gabapentin.

By stabilizing the electrical activity in the nerves, gabapentin prevents those erratic pain signals from firing.

You might start at 100 milligrams and titrate all the way up to 3 ,600 milligrams divided throughout the day.

But you must warn the patient about the primary side effect, which is significant sedation.

Or you could use pregobolin, also known as lyrica.

You can also use SNRIs like venlafaxine or duloxetine, which are excellent for targeted neuropathic pain.

Beyond the systemic nerve medications, you also target the specific underlying cause if you found one.

For a standard yeast infection, 150 milligrams of oral fluconazole usually works.

But if your culture showed a resistant, non -albican strain, you pivot to 600 milligrams of boric acid suppositories used vaginally at night for two weeks.

For the inflammatory dermatoses, the lichens, you need to aggressively stop the immune system from attacking the tissue.

The cornerstone treatment is a super potent topical steroid like clobatosal.

Which sounds terrifying.

We are always taught that strong steroids thin the skin, so putting them on delicate vulvar tissue seems dangerous.

But the physiology of the vulva is unique.

Vulvar skin has an incredibly high mitotic rate, meaning the cells turn over and regenerate very quickly.

So it could actually tolerate high -potency steroids much better than the skin on your arm, though you still monitor it closely.

Calcinerin inhibitors like tecrolimus work too, but they are highly irritating.

For genitourinary syndrome of menopause GSM, the treatment is replenishing the ecosystem with vaginal estrogen.

Or if the patient has a history of breast cancer and is hesitant about estrogen, you can prescribe intrarosa, an FDA -approved DHEA suppository.

It is considered very safe because it only converts to active hormones intracellularly right inside the vaginal cells without spiking hormone levels in the systemic bloodstream.

For disquamative inflammatory vaginitis, you might use compounded 100mg hydrocortisone suppositories to calm the internal inflammation.

And finally, if your exam revealed hypertonic pelvic floor dysfunction,

the gold standard is pelvic floor physical therapy with biofeedback, sometimes paired with compounded 5mg vaginal diazepam suppositories to help physically relax those spasming muscles.

So if we pull all the way back and look at the entire clinical pathway, it flows logically.

You start with an empathetic, highly detailed history.

You perform a careful non -genital exam, looking for systemic clues like oral lesions.

You conduct a gentle external exam evaluating architecture and mapping the pain.

You move internally, taking your soil samples to evaluate the microscopic ecosystem.

You synthesize all that data into a diagnosis, and you build a multimodal treatment plan that addresses both the tissue damage and the nervous system dysfunction.

So as a student preparing to step into the clinic, what is the biggest takeaway from all of this?

I want you to consider a provocative final thought, the profound neuroplasticity of the human body.

Neuroplasticity, meaning the brain and nerves physically change in response to their environment.

Exactly.

If 39 % of these women suffer in silence and don't seek treatment, their nervous systems, those tiny C fibers, have been undergoing years, sometimes decades, of unchecked central sensitization.

The check engine light has been flashing for so long that it has literally rewired the entire dashboard.

By the time that trembling, exhausted patient finally sits on the exam table in front of you, you aren't just treating a localized skin condition.

You are attempting to painstakingly rewire a nervous system that has been physiologically trained to interpret every single touch as agony.

When you truly understand the biology behind that kind of suffering, it entirely changes how you speak, how you listen, and how gently you perform your exam for your very next patient.

It demands an incredible amount of both empathy and clinical precision.

And we hope this deep dive is giving you the exact tools you need to provide both.

On behalf of the Last Minute Lecture Team, thank you so much for joining us.

We wish you the absolute best of luck on your exams, good luck out there at your clinical rotations, and we will see you next time.