Origin of Brainstem Hypoperfusion in POTS and Long COVID: A Dual-Gate Hypothesis Linking Mechanical and Molecular Initiation
Dr. Graham Exelby June 2025- a Preliminary Paper Abstract Postural Orthostatic Tachycardia Syndrome (POTS) frequently presents after...
Graham Exelby
9 min read
34 views
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Potential Role for use of Candesartan and Telmisartan in Mitigating Cognitive Impairment in Long COVID
Dr Graham Exelby May 2024, revised May 2025 Abstract Angiotensin II receptor blockers (ARBs), particularly telmisartan and candesartan,...
Graham Exelby
11 min read
30 views
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Lymphatic Obstruction in POTS, CFS, and Long COVID: A Call for Integrated Therapeutic Approaches
- Unblocking the Invisible Network: Fascia, Mast Cells, and the Clinical Relevance of Lymphatic Obstruction in Complex Syndromes Dr...
Graham Exelby
16 min read
440 views
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Mast Cell Activation as a Driver of Central Sensitization in POTS, Long COVID, and Fibromyalgia
Mechanistic Hypotheses and the Role of Collagenase and RAGE Activation Dr Graham Exelby May 2025 Abstract Mast cell activation is...
Graham Exelby
9 min read
14 views
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Neurovascular-Endocrine Dysfunction as a Core Axis in POTS, Long COVID, and Fibromyalgia
The interplay between intracranial venous congestion, brainstem hypoperfusion, and HPA axis dysfunction Dr Graham Exelby May 2025...
Graham Exelby
18 min read
21 views
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Neurometabolic Modelling of PEM and Central Sensitisation
Dr Graham Exelby May 2025 Abstract Post-exertional malaise (PEM) and central sensitization are defining features of POTS, ME/CFS, Long...
Graham Exelby
10 min read
4 views
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Mould, Sustained Stress, and PTSD Converge on the RAGE–TLR4 Axis: A Unifying Model of Neuroimmune Dysregulation
Dr Graham Exelby May 2025 Abstract Chronic mould exposure, sustained psychological stress, and PTSD have emerged as key environmental...
Graham Exelby
40 min read
11 views
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Locus Coeruleus Hypoperfusion and Noradrenergic Vasospasm: A Central Mechanism in Dysautonomia and Cerebral Hypoperfusion
Dr Graham Exelby May 2025 Abstract Brainstem hypoperfusion is increasingly recognized as a unifying feature in dysautonomic syndromes...
Graham Exelby
17 min read
4 views
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Intracranial Hypertension, Venous and Lymphatic Flow Dysfunction- the Core Hydraulic Dysfunctions
Dr Graham Exelby May 2025 Abstract Postural orthostatic tachycardia syndrome (POTS), particularly in the context of Long COVID, ME/CFS,...
Graham Exelby
56 min read
12 views
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Hydraulic and Vascular Autonomic Dysregulation in POTS- The Modified Geddes Baroreceptor Hypothesis
Dr Graham Exelby May 2025 Abstract Postural Orthostatic Tachycardia Syndrome (POTS) reflects a multifactorial disruption of vascular,...
Graham Exelby
10 min read
1 view
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Dysautonomia as a Neuroimmune–Metabolic Disorder: A Unified Model Linking TLR4 Activation, Brainstem Hypoxia, and Autonomic Plexus Dysfunction
Dr Graham Exelby May 2025 Contents: 1. Abstract 2. Introduction 3. Section 1- Linking Immune dysregulation to Metabolic,...
Graham Exelby
30 min read
16 views
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Beyond the Symptoms: Targeting Underlying Mechanisms in POTS
Dr Graham Exelby April 2025 Table of Contents 1. Introduction: A Shift Toward Root-Cause POTS Management 2. Hypoxia as the Common...
Graham Exelby
12 min read
517 views
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GABA dysfunction in POTS, Long COVID, Fibromyalgia and Long COVID
Dr Graham Exelby December 2024 Abstract GABA (γ-aminobutyric acid), the primary inhibitory neurotransmitter in the central nervous...
Graham Exelby
13 min read
1,769 views
1 comment
Heat and Cold Intolerance
Dr Graham Exelby December 2024 Temperature intolerance is a common symptom in Postural Orthostatic Tachycardia Syndrome (POTS) and often...
Graham Exelby
4 min read
112 views
0 comments
Targeting the Perfect Storm- Amino Acid Dysfunction in Post Exertional Malaise-
Dr Graham Exelby. December 2024, revised February 2025 Introduction Post-exertional malaise (PEM) represents a multifactorial challenge...
Graham Exelby
25 min read
559 views
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Brainstem Hypoperfusion, Coat hanger pain and Post-Exertional Malaise in POTS and Long COVID
Dr Graham Exelby September 2024 Brainstem hypoperfusion, coat hanger pain and PEM have similar pathogenesis, and are found in that same...
Graham Exelby
61 min read
540 views
1 comment
Amino Acid, Essential Vitamin and Mineral Burn off in Post Exertional Malaise
A Preliminary Study -September 2024, currently being peer-reviewed Dr Graham Exelby Brainstem hypoperfusion, coat hanger pain and PEM...
Graham Exelby
62 min read
289 views
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Breaking Through in POTS and Long Covid
Revised April 2025. Dr Graham Exelby We have moved away from the traditional model of treating POTS, CFS, Long COVID, and Fibromyalgia...
Graham Exelby
3 min read
551 views
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The Glymphatic System
Glymphatic System (or glymphatic clearance pathway or paravascular system) Dr Graham Exelby. January 2024- Currently under revision...
Graham Exelby
33 min read
260 views
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Low Glutamate Diet
December 2023 Dr Graham Exelby, Dr Valerio Vittone, Ms Kelley Bright Diet change can be extremely important managing the inflammatory...
Graham Exelby
6 min read
252 views
0 comments
