Personalised Support for Vector-Borne Illness & Chronic Infections
At the Autoimmune Clinic, we support individuals with complex, chronic infections such as Lyme disease and associated co-infections through a functional medicine approach.
Vector-borne diseases are infections transmitted by insects such as ticks, mosquitoes, fleas, and mites. These infections can affect multiple systems in the body and are increasingly recognised as a significant contributor to chronic, unresolved illness.
Many individuals present with fatigue, neurological symptoms, pain, immune dysregulation, and sensitivity to foods or environments, often without a clear diagnosis.
Our approach focuses on identifying underlying drivers, supporting the immune system, reducing inflammatory load, and addressing both infections and the terrain in which they persist.
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Note that we take a holistic approach to chronic illness. We support individuals using a functional medicine framework, considering the wider picture, ensuring that foundations for health are in place as well as addressing chronic infections
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Although we are not medical prescribers, we work closely with a medical doctor and a private pharmacist with prescribing rights. This means that individuals can access medications such as antibiotics, mast cel stabilisers amongst others when appropriate.
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What is Vector-Borne Illness?
IN SIMPLE TERMS, VECTOR-BORNE ILLNESSES ARE INFECTIONS TRANSMITTED THROUGH BITES FROM INSECTS OR ARTHROPODS.
These include a range of bacterial, parasitic, and viral pathogens that can persist in the body and contribute to chronic symptoms.
While acute infections may be recognised and treated by the conventional medical world, many cases go undiagnosed or inadequately addressed, particularly when symptoms become chronic and non-specific.
There is growing awareness that these infections are far more common than previously thought, yet they remain significantly underdiagnosed within conventional medicine.
Common Vector-Borne Infections & Symptoms
Borrelia species
BACTERIUM (SPIROCHETE) CAUSING LYME DISEASE
Borrelia is the bacterium most commonly associated with Lyme disease and is primarily transmitted through tick bites.
Not everyone develops the classic bullseye rash, and most people do not remember being bitten.
Symptoms may include:
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Profound fatigue
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Post-exertional malaise
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Migratory joint pain
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Muscle aches
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Neck stiffness
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Headaches
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Brain fog
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Poor memory
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Word-finding difficulty
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Tingling, numbness or nerve pain
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Sound or light sensitivity
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Sleep disturbance
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Heart palpitations
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Dizziness or autonomic symptoms
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Flu-like episodes
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Temperature dysregulation
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Mood changes, anxiety or low mood
Borrelia can affect connective tissue, joints, the nervous system, the heart and the immune system, which is why symptoms can appear widespread and change over time.
Bartonella species
GRAM-NEGATIVE BACTERIA CAUSING BARTONELLOSIS, CAT SCRATCH DISEASE, BARTONELLA-ASSOCIATED ENDOCARDITIS​​
Often associated with neurological, vascular and neuropsychiatric symptoms.
Bartonella may be transmitted through ticks, fleas, lice, biting flies, and animal scratches or bites, especially cats. It is often discussed in the context of “co-infections” alongside Lyme disease.
Symptoms may include:
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Burning nerve pain
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Shooting pains
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Tingling or numbness
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Foot pain, especially on first standing in the morning
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Shin pain
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Headaches
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Eye pain or visual disturbances
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Light sensitivity
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Dizziness
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Anxiety, panic, agitation or irritability
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Depression or mood swings
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Poor concentration
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Insomnia
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Internal vibrations or tremor-like sensations
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Skin streaks or stretch-mark-like rashes
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Swollen lymph nodes
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Sore soles
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Vascular symptoms, such as cold hands and feet
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Histamine-type symptoms or increased reactivity in some individuals
Bartonella is often suspected when neurological, vascular, pain and mood symptoms are prominent.
Babesia species
PARASITE (PROTOZOA) CAUSING BABESIOSIS
A malaria-like parasite affecting red blood cells.
Babesia is a protozoal parasite transmitted primarily through ticks. It infects red blood cells and may create symptoms that feel different from classic bacterial infections.
Symptoms may include:
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Night sweats
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Chills
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Episodes of feeling hot or cold
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Air hunger or a sense of not getting enough oxygen
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Breathlessness
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Chest pressure
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Palpitations
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Dizziness or light-headedness
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Head pressure
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Severe fatigue
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Exercise intolerance
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Flu-like episodes
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Muscle aches
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Nausea
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Loss of appetite
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Anxiety or a sense of internal unease
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Sleep disruption
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Anaemia-type symptoms in some cases
Babesia may be particularly relevant when air hunger, sweats, chills, palpitations and profound fatigue are present.
Anaplasma phagocytophilum
INTRACELLULAR BACTERIUM CAUSING HUMAN GRANULOCYTIC ANAPLASMOSIS (HGA)
An intracellular bacterial infection
Anaplasma is transmitted by ticks and infects white blood cells. Acute infection can present like a flu-like illness, but it may also contribute to ongoing immune stress in more complex cases.
Symptoms may include:
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Fever
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Chills
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Severe headache
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Muscle aches
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Fatigue
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Malaise
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Nausea
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Reduced appetite
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Dizziness
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Low white blood cell count
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Low platelet count
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Raised liver enzymes
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Generalised inflammatory symptoms
Anaplasma is often more acute in presentation, but in complex chronic illness it may be considered when there is a history of tick exposure alongside immune or blood count changes.
Rickettsia species
INTRACELLULAR BACTERIUM CAUSING RICKETTSIOSIS, SPOTTED FEVER GROUP RICKETTSIOSIS
A group of bacteria transmitted by ticks, fleas, mites and lice
Rickettsial infections include several species and syndromes, depending on geographical location and exposure. These infections can affect blood vessels and the inflammatory system.
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Symptoms may include:
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Fever
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Severe headache
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Rash
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Muscle aches
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Fatigue
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Swollen lymph nodes
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Nausea
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Abdominal symptoms
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Neurological symptoms in some cases
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Vascular symptoms
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Light sensitivity
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Confusion in more severe cases
Rickettsial infections can be serious when acute, especially if fever, rash and systemic illness are present.
Ehrlichia species
INTRACELLULAR BACTERIUM CAUSING EHRLICHIOSIS, HUMAN MONOCYTIC EHRLICHIOSIS (HME)
Ehrlichia is also transmitted by ticks and can affect immune cells. It may present similarly to Anaplasma, with systemic inflammatory symptoms.
Symptoms may include:
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Fever
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Chills
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Headache
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Muscle aches
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Fatigue
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Nausea or vomiting
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Loss of appetite
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Confusion in more severe cases
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Rash in some individuals
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Low white blood cell count
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Low platelet count
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Raised liver enzymes
Ehrlichia should be considered particularly when there has been tick exposure followed by flu-like illness, abnormal blood counts or liver enzyme changes.
Tick-borne encephalitis virus (TBEV)
VIRUS
Tick-borne encephalitis virus is an RNA virus transmitted primarily through tick bites, which can affect the central nervous system and lead to a biphasic illness ranging from mild viral symptoms to severe neurological disease.
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Symptoms may include:
• Flu-like illness
• Fever
• Fatigue
• Headache
• Muscle aches
• Nausea
• Neck stiffness
• Photophobia
• Confusion
• Reduced concentration
• Dizziness
• Ataxia
• Tremor
• Weakness or paralysis
• Seizures (in severe cases)
• Post-viral fatigue
• Cognitive dysfunction
Common Co-Infections In Vector-Borne Illness
When the immune system is working well, it is constantly keeping infections in check, often without us even realising. Many viruses, bacteria and other organisms can live in the body in a quiet, controlled, dormant state without causing symptoms.
The problem starts when the immune system becomes overwhelmed or dysregulated.
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In the context of vector-borne illness, the body is already dealing with a significant burden. Over time, this can place strain on the immune system, especially when combined with factors such as stress, poor sleep, nutrient depletion, gut issues, or environmental exposures, such as mould.
When this happens, the immune system can lose its ability to regulate things properly.
Instead of responding in a balanced way, it may become overactive in some areas, driving inflammation and symptoms, while at the same time being less effective at controlling infections.
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This is often when we begin to see:
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Reactivation of viruses that were previously dormant
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Increased susceptibility to opportunistic infections
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Ongoing, low-grade inflammation
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A wider range of symptoms developing over time
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Increased sensitivity or allergies to foods, chemicals, or environments
This is why many people with vector-borne illness don’t just have a single issue, but a more complex picture involving multiple layers. It also explains why focusing purely on the infection itself is often not enough.
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For recovery to happen, we need to support the body as a whole. That means helping the immune system regain balance, reducing overall inflammatory load, and addressing any underlying factors such as mould exposure or Chronic Inflammatory Response Syndrome that may be keeping the system under strain.
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ADDITIONAL CO-INFECTIONS MAY INCLUDE:
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• Mycoplasma species – intracellular bacteria contributing to fatigue, respiratory symptoms and immune dysregulation
• Chlamydia pneumoniae – intracellular bacterium linked with chronic respiratory symptoms and systemic inflammation
• Epstein–Barr virus (EBV) – latent herpesvirus that may reactivate and drive fatigue and immune activation
• Cytomegalovirus (CMV) – herpesvirus that can contribute to persistent immune activation when reactivated
• Human herpesvirus 6 (HHV-6) – associated with neurological symptoms and chronic fatigue when active
• Coxsackievirus – enterovirus linked with post-viral fatigue and autonomic dysfunction
• Parvovirus B19 – virus associated with joint pain, fatigue and autoimmune-type symptoms
• Toxoplasma gondii – protozoan parasite that may affect neurological and immune function
• Candida species – opportunistic yeast contributing to gut dysfunction and systemic inflammation
• Streptococcus species – bacteria that may drive chronic immune activation and post-infectious syndromes
HOW ARE THESE INFECTIONS TRANSMITTED?​
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Vector-borne pathogens are transmitted through:
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Tick bites (often unnoticed)
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Flea bites or animal exposure
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Mosquito bites (in some regions)
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Mites or lice
In reality, transmission is often far less obvious than people expect. Ticks can be extremely small and bites are usually painless, so many individuals never realise they have been bitten. It is very common not to recall a tick, a rash, or a clear starting point to symptoms.
In addition, ticks are not the only route of exposure. Some pathogens can be transmitted through other insects or animal contact, making it even harder to identify when exposure occurred.
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Symptoms also do not always appear immediately. The immune system may initially keep infections under control, with symptoms only developing later when the body is under additional strain.
This means there is often no clear link between exposure and symptom onset, which is one of the reasons these conditions are frequently overlooked.
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Why Are Vector-Borne Illnesses Often Missed?
Vector-borne infections are often overlooked because they do not present in a clear or uniform way. Instead, they tend to cause broad, fluctuating symptoms affecting multiple systems, which can make it difficult to identify a single underlying cause.
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Testing can also be limited. Standard methods are typically designed for acute infections and may lack sensitivity for chronic or low-grade presentations.
Timing, immune response, and prior exposure can all influence results, meaning a negative test does not always rule out infection.
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There is also significant overlap with other chronic conditions such as chronic fatigue syndrome, fibromyalgia, and autoimmune disease. This can lead to misdiagnosis or multiple labels without addressing the root cause.
Awareness within conventional healthcare is questionable, particularly in the absence of a known tick bite or classic early symptoms.
As a result, many individuals are told that their symptoms are unexplained or attributed to stress, which can delay appropriate investigation and support.
The Role of Immune Dysregulation
For many individuals, it is not just the presence of an infection that drives symptoms, but how the immune system responds to it. The same pathogen can lead to very different clinical presentations depending on immune resilience, inflammatory tone, and overall physiological capacity.
Factors that may contribute to immune dysregulation include:
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Chronic stress and nervous system dysregulation
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Nutrient deficiencies
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Gut dysfunction and dysbiosis
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Hormonal imbalances
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Environmental exposures
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Previous infections
When the immune system becomes dysregulated, it may struggle to effectively identify and clear infections. Instead of mounting a balanced response, there may be either insufficient pathogen clearance or a prolonged, exaggerated inflammatory response. This can allow infections to persist, contribute to ongoing immune activation, and drive chronic, multi-system symptoms over time.
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There is a significant overlap between vector-borne illness and Mast Cell Activation Syndrome.
Mast cells are part of the immune system and play a key role in protecting the body. However, when they become dysregulated, they can release inflammatory chemicals such as histamine in an excessive or inappropriate way.
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In the context of vector-borne illness, ongoing infection and immune activation can act as a trigger for mast cell dysfunction.
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This may present as:
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Increased sensitivity to foods
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Reactions to supplements or medications
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Flushing, itching or rashes
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Sinus congestion or throat symptoms
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Digestive symptoms
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Dizziness or light-headedness
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Palpitations
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Heightened reactivity to smells or chemicals
For some individuals, MCAS becomes a significant driver of symptoms and can make treatment more challenging, particularly if reactions are triggered by interventions that would otherwise be helpful.
This is why stabilising mast cells and reducing overall inflammatory load is often an important first step.
Supporting the nervous system, reducing triggers, and taking a gradual, personalised approach can help improve tolerance and allow the body to respond more effectively to treatment over time.
Vector-Borne Illness and MCAS
The Link Between Vector-Borne Illness, Mould & CIRS
There is significant overlap between vector-borne illness and Chronic Inflammatory Response Syndrome.
Many individuals with chronic infections also have underlying mould exposure or biotoxin illness, which further impairs immune function.
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In these cases:
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The immune system remains chronically activated
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Detoxification pathways may be impaired
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Inflammatory markers remain elevated
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Recovery becomes more complex
Addressing mould exposure and biotoxin clearance is often a key part of supporting recovery.
Treating the Pathogen Without Supporting the Immune System
Another key issue we see in practice is focusing solely on antimicrobial approaches without addressing the underlying terrain.
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In many cases:
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The immune system is already overwhelmed
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Detoxification pathways are compromised
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The body is not in a position to tolerate or respond to treatment effectively
Supporting immune regulation, nervous system balance, and overall resilience is essential before and during any targeted antimicrobial work.
