Restoration of Cerebral Perfusion in Chronic Stress and Post-Viral Long Covid Syndromes

From the Author

After publishing “Medical Massage in Cases of Long COVID and Chronic Stress–Related Disorders – Part 2”
https://www.medicalmassage-edu.com/blog/medical-massage-in-cases-of-long-covid-and-chronic-stress-related-disorders-part-2.htm

I received an email from a very dear friend — in my opinion, one of the greatest out-of-the-box primary care physicians.

Hi Boris,

I've read Part 2. The clinical arguments about chronic stress, autonomic imbalance, and the mechanical effects of muscle tone on drainage are compelling and align with what I see. However, I believe a primary care physician (PCP) might question the strength of the claims around "The Power of Electrical Activity" and the ability of medical massage to trigger "multiple positive responses across the body’s organ systems" in a way no other therapeutic modality—including pharmacological interventions—can. While touch is powerful, PCPs often rely on modality comparisons supported by large-scale randomized controlled trials, which are typically less common for specific manual techniques compared to standard pharmaceuticals or CBT.

This physician is familiar with my work and regularly refers patients to me. I must admit I had mixed feelings upon receiving this feedback. It made me reflect on whether some of my claims regarding medical massage may come across as overly strong or even arrogant.

There is no doubt that I believe deeply in integrative medicine. In my strong opinion, it is the only way to provide outcome-oriented and safe treatment. As a massage practitioner, I cannot give my best without medical collaboration. I rely on physicians to rule out serious conditions such as multiple sclerosis, spinal tumors, brain tumors, and other pathologies. By the nature of our profession, I cannot fully focus on hands-on therapeutic performance without appropriate medical clearance and interdisciplinary support.

I also clearly understand the critical importance of pharmaceutical interventions. Medications have saved my life more than once. Even a simple tooth infection, without antibiotics, can become life-threatening. There are countless examples where pharmacology is not optional, but essential.

Regarding medical massage: many protocols have been developed through controlled studies. However, beyond formal research, much of what I write and teach, is based on accumulated clinical experience. My primary audience consists of professionals who use physical methods of treatment — first and foremost massage therapists.

My claims are rooted in clinical reasoning and practical outcomes. They are open to challenge, and I welcome professional discussion. If any part of my writing appears overly assertive, please understand that as an educator I must encourage massage therapists to recognize the importance and potential impact of the methodology they practice.

I would also like to clarify: I am a clinician — a medical and sports massage practitioner — with sufficient theoretical knowledge to explain what I am doing with my hands. I do not claim to be an academic intellectual. I am, first and foremost, a hands-on practitioner.

This email inspired me to revisit and refine the overview of medical massage in cases of Long COVID and chronic stress–related disorders.

If you disagree with my statements or interpretations, I invite you to initiate discussion. Everything here is educational. We all benefit from dialogue. Our level of professionalism is reflected in the quality of care we provide. This is not about us — it is about the people who are suffering and whom we are privileged to help.

Best wishes,
Boris Prilutsky

A Neurovascular–Mitochondrial Perspective

Abstract

Acute stress produces immediate neuromuscular activation, particularly within the cervical, upper thoracic, and diaphragmatic musculature. While adaptive in short-term conditions, persistent activation during chronic stress states contributes to neuroendocrine dysregulation, vascular impairment, and neuroinflammation. Emerging evidence suggests that impaired cerebral perfusion, glymphatic dysfunction, microvascular injury, and mitochondrial stress are central mechanisms underlying cognitive dysfunction, autonomic instability, and fatigue observed in chronic stress–related disorders and post-viral syndromes such as Long COVID. This review examines the relationship between stress-induced muscular tension, cerebrovascular dynamics, mitochondrial allostatic load, and neuroinflammation. Restoration of arterial blood flow and venous/CSF drainage may represent a critical upstream physiological target in recovery.

1. Acute Stress: Immediate Neuromuscular Activation

The initial physiological response to acute stress is characterized by rapid activation of the sympathetic nervous system and the hypothalamic–pituitary–adrenal (HPA) axis (McEwen, 2017).

Clinically, this manifests as:

• Increased tone in cervical extensors and upper trapezius
• Scalene and sternocleidomastoid activation
• Diaphragmatic restriction
• Upper thoracic rigidity

Electromyographic studies confirm increased resting muscle activity in stress-exposed individuals (Lundberg et al., 1994). This response is adaptive in short-term survival contexts.

2. Chronic Stress: Hormonal Overdrive and Neuroinflammation

When stress becomes persistent, sustained cortisol and catecholamine exposure disrupt feedback regulation of the HPA axis, producing allostatic load (McEwen & Wingfield, 2003).

Chronic stress contributes to:

• Microglial activation
• Increased pro-inflammatory cytokines (IL-6, TNF-α)
• Blood–brain barrier permeability changes
• Reduced neurogenesis

Neuroinflammation associated with chronic stress has been well documented in both animal and human models (Calcia et al., 2016; Dantzer et al., 2008).

3. Muscular Tension and Neurovascular Drainage

Sustained contraction of cervical and upper thoracic musculature may influence cranial hemodynamics. Anatomically, jugular venous outflow and vertebral venous plexuses traverse regions commonly affected by stress-induced hypertonicity.

Impaired venous drainage has been associated with increased intracranial venous pressure and altered CSF dynamics (Bateman, 2000; Brinker et al., 2014). The glymphatic system, responsible for metabolic waste clearance, depends on adequate CSF flow and vascular pulsatility (Iliff et al., 2012).

Chronic restriction may therefore:

• Impair venous outflow
• Reduce glymphatic clearance
• Increase intracranial pressure
• Decrease cerebral perfusion pressure

Reduced cerebral perfusion limits oxygen and glucose delivery, particularly to high-metabolic-demand regions such as the prefrontal cortex and brainstem autonomic centers.

4. Chronic Stress and Microvascular Dysfunction

Chronic stress is associated with endothelial dysfunction and microvascular impairment (Ghiadoni et al., 2000).

Similarly, SARS-CoV-2 infection has been shown to:

• Damage endothelial cells
• Induce microthrombotic events
• Impair cerebral microcirculation

(Lee et al., 2021; Østergaard, 2021).

Neuroimaging studies in Long COVID demonstrate reduced cerebral blood flow and persistent neuroinflammatory markers (Douaud et al., 2022).

5. Mitochondrial Allostatic Load

Mitochondria respond dynamically to stress exposure. However, prolonged stress produces mitochondrial allostatic load—characterized by:

• Reduced ATP efficiency
• Increased reactive oxygen species
• Altered mitochondrial dynamics
• Impaired biogenesis

(Picard & McEwen, 2018).

Reduced perfusion exacerbates mitochondrial dysfunction by limiting substrate delivery. The brain, consuming ~20% of total body oxygen, is especially vulnerable to hypoperfusion-induced mitochondrial stress.

6. Acetylcholine and the Cholinergic Anti-Inflammatory Pathway

Acetylcholine (ACh) modulates:

• Parasympathetic tone
• Cerebral vasodilation
• Anti-inflammatory signaling

The cholinergic anti-inflammatory reflex attenuates cytokine production via vagal pathways (Tracey, 2002).

Impaired ACh signaling in chronic stress states contributes to autonomic imbalance and inflammatory persistence.

7. Restoration of Cerebral Perfusion as an Upstream Therapeutic Target

Cerebral perfusion pressure depends on adequate arterial inflow and unobstructed venous outflow.

Improving:

• Cervical and diaphragmatic mobility
• Venous drainage
• CSF circulation
• Parasympathetic tone

may contribute to normalization of cerebral hemodynamics.

Increased cerebral blood flow enhances:

• Oxygen and glucose delivery
• Mitochondrial ATP production
• Waste clearance
• Reduction of inflammatory signaling

Neurovascular coupling studies demonstrate that improved perfusion is associated with reduced inflammatory activation and improved cognitive performance (Iadecola, 2017).

8. Massage Therapy and Physiological Mechanisms

Massage therapy has been shown to:

• Reduce cortisol levels (Field et al., 2005)
• Increase parasympathetic activity
• Improve peripheral circulation
• Enhance endothelial function (Arroyo-Morales et al., 2008)

Preliminary evidence suggests mechanical stimulation may promote mitochondrial biogenesis through mechanotransduction pathways (Hood et al., 2019)

Massage-induced parasympathetic activation may also facilitate acetylcholine release and support the cholinergic anti-inflammatory pathway.

9. Integrative Model of Recovery

In chronic stress and Long Covid syndromes:

1. Stress → muscular hypertonicity
2. Impaired venous/CSF drainage
3. Reduced cerebral perfusion
4. Mitochondrial dysfunction
5. Neuroinflammation
6. Autonomic dysregulation

Restoration of arterial blood supply and drainage dynamics may interrupt this cascade.

Recovery likely requires:

• Reduction of myofascial restriction
• Optimization of neurovascular flow
• Mitochondrial recovery
• Autonomic rebalancing

Conclusion

Chronic stress and Long Covid syndromes share converging mechanisms involving neuroendocrine dysregulation, microvascular injury, impaired cerebral perfusion, and mitochondrial allostatic load. Emerging evidence supports the hypothesis that restoration of adequate cerebral blood flow and drainage dynamics may represent a critical upstream intervention point. Enhancing arterial supply to the brain is associated with improved metabolic function and reduction of neuroinflammatory signaling, contributing to recovery of cognitive and autonomic function.

Announcement

Below is the link for detailed information and registration for my upcoming webinar:

“Medical Massage in Cases of Long COVID and Chronic Stress–Related Disorders.”

This is a primarily hands-on demonstration class in which I cover, in depth, everything described in my published overview — and more. The webinar focuses on practical clinical application, treatment logic, and protocol implementation.

Current statistics highlight the importance of acquiring knowledge in this specialized therapeutic approach. Expanding your clinical understanding in this area may significantly influence the way you practice.

Reliable statistics indicate:

• 75% to 90% of primary care visits are related to stress-associated conditions.
• Approximately 20 million Americans are currently living with Long COVID.
• More than 100 million Americans have been infected with COVID-19, with evidence suggesting increased risk for cognitive impairment, including neurodegenerative conditions.

The demand for safe, outcome-oriented, integrative therapeutic approaches continues to grow. This webinar provides structured, clinically reasoned protocols designed for licensed professionals.

I look forward to seeing you.

Selected References

• Arroyo-Morales, M. et al. (2008). Massage therapy effects on endothelial function. J Altern Complement Med.
• Bateman, G.A. (2000). Venous hypertension and intracranial pressure. J Neurol Neurosurg Psychiatry.
• Brinker, T. et al. (2014). Dynamics of CSF circulation. Acta Neuropathologica.
• Calcia, M.A. et al. (2016). Stress and neuroinflammation. Neuropsychopharmacology.
• Dantzer, R. et al. (2008). From inflammation to sickness behavior. Nat Rev Neurosci.
• Douaud, G. et al. (2022). Brain changes after SARS-CoV-2 infection. Nature.
• Field, T. et al. (2005). Cortisol decreases following massage. Int J Neurosci.
• Ghiadoni, L. et al. (2000). Mental stress and endothelial dysfunction. Circulation.
• Hood, D.A. et al. (2019). Regulation of mitochondrial biogenesis. Cold Spring Harb Perspect Biol.
• Iadecola, C. (2017). Neurovascular coupling and dysfunction. Neuron.
• Iliff, J.J. et al. (2012). Glymphatic system description. Sci Transl Med.
• Lee, M.H. et al. (2021). Microvascular injury in COVID-19 brain. NEJM.
• Lundberg, U. et al. (1994). EMG and stress. J Psychosom Res.
• McEwen, B.S. (2017). Neurobiological effects of stress. Neurobiol Stress.
• Picard, M., McEwen, B.S. (2018). Psychological stress and mitochondria. Brain Behav Immun.
• Tracey, K.J. (2002). Cholinergic anti-inflammatory pathway. Nature.