FND and polyvagal theory, what's that all about???

As a specialist in both polyvagal theory and functional neurological disorder (FND), I’ve seen first-hand the powerful connection between these two areas of neuroscience. Polyvagal theory, which explores the role of the autonomic nervous system in regulating emotional and physiological responses, offers valuable insights into the underlying mechanisms of FND and how symptoms can be effectively treated.

FND is a condition that can cause a range of symptoms, including weakness, tremors, and other neurological symptoms, without a clear organic cause. While FND was long considered a purely psychological disorder, recent research has revealed that it is linked to dysfunctions in the autonomic nervous system. Polyvagal theory gives us a framework for understanding how these dysfunctions can manifest, and how we can intervene to restore balance.

One of the key tenets of polyvagal theory is that the autonomic nervous system has two main modes: sympathetic, which is associated with the “fight or flight” response, and parasympathetic, which is associated with relaxation and recuperation. These modes are signalled by different branches of the autonomic nervous system, which can be either activated or inhibited depending on the situation.

In FND, there is often an imbalance in these modes, with the sympathetic branch becoming overactive and the parasympathetic branch becoming underactive. This can result in symptoms like increased heart rate, breathing difficulties, and muscle tension. Polyvagal theory suggests that by addressing this imbalance and restoring proper autonomic function, we can alleviate many of these symptoms.

One approach that has shown promise in treating FND from a polyvagal perspective is the use of biofeedback. By monitoring and regulating physiological responses like heart rate and skin conductance, patients can learn to modulate their autonomic function and re-establish a healthier balance between the two modes. Other interventions like trauma focussed yoga/ EMDR therapy and mindfulness practices may also be effective in addressing the emotional and psychological factors that can contribute to FND.

Overall, for me, the insights provided by polyvagal theory have the potential to revolutionize our understanding and treatment of FND. By recognizing the role of autonomic dysregulation in this condition, we can tailor interventions to address the underlying causes and symptoms more effectively. As a specialist, I’m excited to see how these insights will continue to evolve and advance in the years ahead.