Why does the brain's threat-detection system treat intimacy the same way it treats danger - and what does that mean for treating vaginismus?
Dr. Seth Senecal is a US-based clinical psychologist working at the intersection of trauma, anxiety, and chronic pain. He works with people experiencing vaginismus and other pelvic pain conditions and can be reached at docsenecal@gmail.com. In this episode, Dr. Senecal explains how fear hijacks the physiological systems that make intimacy possible, why the body cannot simultaneously be in protection mode and in the kind of open, relaxed state that allows for pain-free sex, and what it actually takes to address the emotional and psychological dimensions of vaginismus alongside the physical ones.
How fear overrides the body - and keeps the pelvic floor from releasing
The nervous system does not distinguish meaningfully between a physical threat and an anticipated painful experience during intimacy. Both activate the same sympathetic response: muscles tighten, including the pelvic floor, blood flow to the genitals decreases, and the body shifts into a state of protection. For someone with vaginismus, where anticipation of pain is well-founded on the basis of actual experience, this protective response can become highly automatic - triggered before any deliberate decision is made, and very resistant to being overridden by conscious intention.
Dr. Senecal explains this process clearly: the pelvic floor is a muscle, and muscles respond to perceived threat in the same way as any other part of the body. The fact that someone desperately wants to be able to relax is not sufficient to override a nervous system that has learned, correctly, that a threat is present. Understanding why the body is doing this - and recognising it as a rational protective response rather than a failure of will - is the foundation of effective psychological work with vaginismus.
"The sympathetic nervous system is where the classic fight or flight response is. When something frightens us, it's what gets us ready for action. And this is not just sexual arousal, but overall physiological and mental arousal - and it directly overrides the systems that allow for intimacy."
The safety-arousal paradox: why you can't have one without the other
The paradox at the heart of vaginismus treatment is this: arousal is one of the most effective physiological antidotes to pain perception, but arousal requires a sense of safety to develop, and the experience of vaginismus systematically undermines the sense of safety needed for arousal to build. Anxiety - even low-grade, background anxiety about whether this attempt will work - acts as a "mood killer" in the most literal physiological sense. It activates the sympathetic system, which suppresses the parasympathetic response that supports arousal, which increases the likelihood of pain, which reinforces the anxiety.
Dr. Senecal discusses what creating genuine safety looks like - not performing safety, or deciding to feel safe, but the practical, behavioural, and relational conditions that allow the nervous system to actually shift. This is why partners are part of the treatment picture, and why the relational context of the therapeutic work matters as much as any individual technique.
"For blood to flow as it should and for muscles to relax, there has to be that feeling of safety. And crucially, real safety - not just telling yourself you feel safe, but the actual nervous system experience of it."
Why dilators alone often fall short - and what the missing piece is
Dilator therapy is the standard physical treatment for vaginismus and it can be effective, but Dr. Senecal is clear about why it so often falls short when used without addressing the psychological and emotional dimensions. Dilators address the muscular pattern - but if the nervous system continues to interpret the situation as a threat, the muscular pattern will keep reinstating itself. The physical pathway needs to be accompanied by work on the threat-detection system itself.
Shame and anger are among the emotions that can be transformed into tools for healing rather than obstacles to it. Dr. Senecal discusses how psychological work with vaginismus often involves excavating these emotions - not to dwell in them, but to understand what they are doing to the nervous system and to create new associations that give the body different information about what is happening.
"Shame - the feeling that the fear and the pain is somehow wrong - can often extend into shame for being broken, or not being able to perform. And shame is something that, in quite discreet ways, influences how we experience everything in our world."
Curiosity and softness instead of force
The dominant cultural framing of vaginismus treatment involves effort, persistence, and pushing through. Dr. Senecal argues for an opposite approach: curiosity, softness, and a willingness to work with the body's signals rather than against them. This is not the same as passivity - it requires active engagement with the psychological work. But the orientation is one of interest and gentleness toward a nervous system doing its best with the information it has, rather than frustration at a body refusing to cooperate.
For people who are exhausted from the experience of treating their own pain as a problem to be overcome, this reframe is more than a comfort - it is a practical therapeutic shift that changes what becomes possible.
