You tried. You wanted to. Your partner was patient, the setting felt right and your mind said yes. And your body hit a barrier. As though there were a wall. As though the way through had been sealed off.

You were probably told it was ‘psychological’. That you needed to ‘relax’. That it would pass. That it was your first time, or tiredness, or anxiety.

All of that may be true. And all of it misses the point.

Because in almost every case I see in practice, impossible penetration does not have one single cause. Several mechanisms add up. And depending on which is dominant, the work needed is different.

Let us look at the four main ones.

Mechanism 1 — Reflex contraction of the pelvic floor

This is the best-known mechanism — the one meant by ‘this is vaginismus’ in the strict sense of the term.

When something approaches your vagina — a finger, a tampon, a speculum or a penis — your pelvic floor contracts automatically, without your choosing it. This contraction narrows the vaginal canal to the point where penetration becomes:

  • Either painful, like pressure against a wall
  • Or completely impossible — there is no space left

It is a reflex, not a choice. You may feel nothing mentally (no fear, no disgust, only willingness), and your pelvic floor will still contract. Because it has learnt to.

How do you know whether this is your dominant mechanism?

  • You physically feel a lock at the entrance
  • You find it difficult to insert a tampon
  • A gynaecological examination is very painful or impossible
  • You also tighten your buttocks and lower abdomen involuntarily in other situations

Where to begin? With a bottom-up approach — diaphragmatic breathing, a physiotherapist trained in hypertonicity and progressive dilators. Not with psychotherapy as the first line.

Mechanism 2 — Anticipatory fear (cognitive)

This is different. The pelvic floor is not necessarily permanently hypertonic. It contracts because your brain has anticipated pain. The mental sequence is:

‘I know it will hurt → my body prepares to defend itself → my pelvic floor contracts → it hurts → what I believed is confirmed.’

A closed loop. Self-fulfilling.

This mechanism is typical of women who experienced an initial event — a difficult first sexual experience, a painful gynaecological examination or a frightening account they heard — which established the idea that it would hurt. From then on, each attempt reinforces the belief.

How do you know whether this is your dominant mechanism?

  • You can insert a tampon, but not a penis
  • You can insert your own finger, but not your partner’s
  • You think about pain before anything begins
  • You have a clear memory of an event that changed everything

Where to begin? With top-down and bottom-up work combined — cognitive work (EMDR, CBT or straightforward desensitisation psychotherapy) plus gentle body-based work to break the loop. Mental work alone is not enough, but here it is central.

Mechanism 3 — A lack of desire (with this partner, or in general)

This is the least discussed mechanism, and the one that creates the most confusion. Because physical inability is often confused with an unrecognised lack of desire.

Here is what happens: your body is functioning very well. There is no permanent hypertonicity. No particular fear. Simply, in this relationship, or with this person, or at this moment in your life, your body refuses entry because you do not really want it.

The vagina closes. Lubrication decreases. Penetration becomes impossible. And everyone assumes it is vaginismus.

This is a sensitive mechanism because it requires a question women find difficult to ask: ‘do I want this?’. Not ‘does my partner want this?’. Not ‘should I want this?’. But: ‘do I want this, here, now, with him?’.

How do you know whether this is your dominant mechanism?

  • You can have sex with other partners (or with him only at certain times)
  • You notice the problem worsening during tense periods in the relationship
  • You desire other things (masturbation, fantasies, etc.) but not sex with him
  • You push yourself more than you truly consent

Where to begin? Not with dilators. With couples therapy or individual psychotherapy focused on desire and the relationship. And sometimes — difficult as it is to hear — with the question of the relationship itself.

Mechanism 4 — An underlying medical cause

This is the one that tends to be considered last, when it often deserves to be looked at first.

There are real medical causes that make penetration painful or impossible and are frequently confused with vaginismus. These include:

  • A microperforate hymen (rare but present): the hymen has only a tiny opening, and penetration is physically blocked. Any woman who presents with impossible penetration and has never been able to experience penetration (with a finger, tampon or speculum) should be examined for this possibility.
  • Vulvodynia: pain in the vulva at the entrance, without an identifiable cause. Often mistaken for vaginismus.
  • Lichen sclerosus: a vulval skin condition that weakens the tissues and makes penetration painful. Recognisable by a whitish appearance of the inner labia.
  • Menopausal vaginal dryness (GSM): in perimenopausal or postmenopausal women, the closing may be hormonal rather than muscular.
  • Deep endometriosis: can create painful spots with deep penetration without vaginismus as such.
  • An episiotomy scar that is painful or associated with a difficult experience.

These medical causes do not exclude vaginismus: they can coexist. Lichen sclerosus can cause secondary vaginismus — the body learns to protect itself from real pain. Treating the medical cause is then essential, but does not always undo the protective reflex that has developed.

How do you know whether this is your dominant mechanism?

  • You have very localised pain (rather than an overall closing)
  • You can see a visible lesion on examination (white patches, redness, fissures)
  • The pain appeared after a specific medical event
  • You are in perimenopause or menopause

Where to begin? With a gynaecological examination by a practitioner with expertise in vulval conditions. Not a rushed five-minute examination. An examination taken seriously.

Why the mechanisms combine

In 80% of the cases I see in practice, vaginismus is not an isolated mechanism. It is a combination.

The classic sequence:

  1. Initial pain (mechanism 4 — lichen sclerosus, vulvodynia, a rough examination)
  2. Which establishes anticipatory fear (mechanism 2 — ‘it will hurt’)
  3. Which creates a reflex pelvic floor contraction (mechanism 1 — ‘my body is preparing’)
  4. Which eventually erodes desire in the relationship (mechanism 3 — ‘I do not want to try any more’)

The whole task is to untangle what is happening for you, personally, now. Because treating mechanism 1 when the dominant problem is actually 4 — or mechanism 3 when you are experiencing 2 — misses the point.

There is not one vaginismus. There are different forms of vaginismus. And yours is unique.

What to take from this article

Three things:

  1. Four different mechanisms can make penetration impossible: reflex contraction, anticipatory fear, lack of desire and a medical cause. They can combine.
  2. Identifying your dominant mechanism comes before the work. Without that, you may exhaust yourself pushing at the wrong door.
  3. The work differs depending on the mechanism. Dilators for 1, cognitive therapy for 2, relational work for 3 and a medical examination for 4. None works everywhere.

Further reading

If you want to identify precisely your profile among the possible combinations, I built the book Votre Vaginisme : fini l’errance, dénouer le plaisir selon votre profil around 8 clinical portraits. French edition.

Each portrait corresponds to a common combination of mechanisms, with the priority area of work for that portrait.

➜ Receive the free extract + join the early-readers list

Related articles:

📖 Further reading — Scarlett Kaplan’s book, Votre Vaginisme (French edition): the most comprehensive French-language reference on vaginismus.