Illawarra Mould Removal is not a health authority, and this page is general information, not medical advice. “CIRS”, short for Chronic Inflammatory Response Syndrome, is a term used by a subset of practitioners to describe a chronic illness they attribute to exposure to water-damaged buildings, including mould. It is not currently recognised as an established diagnosis by mainstream medical, immunology or allergy bodies in Australia or internationally, and the evidence behind it is genuinely contested. This page sets out what CIRS is claimed to be, what the mainstream medical position actually is, and where that leaves someone who is unwell and living in, or has lived in, a mouldy home.
What is CIRS claimed to be?
The term was developed and popularised by a small number of practitioners, most prominently US physician Dr Ritchie Shoemaker, from the late 1990s onward. As described by its proponents, CIRS is a multi-system illness said to result from exposure to biotoxins, biological substances proponents attribute to water-damaged buildings and mould, and in some versions of the theory, other environmental sources, in people who are said to carry a genetic susceptibility, often described in terms of particular HLA (human leukocyte antigen) haplotypes, that prevents them from clearing these substances normally.
Proponents describe a wide, non-specific symptom list, commonly including fatigue, brain fog, joint and muscle pain, headaches, sensitivity to light, respiratory symptoms and mood changes, said to persist or worsen with ongoing exposure and improve when the person leaves the affected environment. Diagnostic approaches promoted within this framework have included visual contrast sensitivity (VCS) testing and panels of biomarkers such as MMP-9, C4a and TGF-beta1, alongside proposed treatment protocols that can include binding agents, nasal sprays and other interventions.
We’re describing these claims because they’re what a search for “CIRS” turns up, not because we’re endorsing them.
What the mainstream medical position actually is
CIRS is not listed as a diagnosis in the standard diagnostic classifications used in mainstream medicine, and mainstream immunology, allergy and general medical bodies in Australia and internationally do not recognise it as an established clinical entity. The evidence offered in support of the theory, including the proposed biomarker panels and the genetic-susceptibility claims, has not been validated through the kind of independent, peer-reviewed research that would be needed to support a new diagnostic category, and critics within mainstream medicine have raised concerns about the specificity of the proposed tests, the commercial interests involved in some CIRS-branded testing and treatment protocols, and the risk that a non-specific symptom list gets attributed to mould exposure without ruling out other, better-established causes first.
None of this means that people who feel unwell after time in a mouldy or water-damaged building are imagining their symptoms, or that damp indoor environments are harmless. It means the specific claim that “CIRS” is a validated, mould-caused illness with a reliable diagnostic test is not one that mainstream medicine currently supports. That is a meaningfully different, and much more modest, claim than the one made by CIRS proponents.
What mainstream health guidance does say about mould and health
Separate from, and considerably more conservative than, the CIRS framework, mainstream public health guidance in Australia, including NSW Health’s mould information, is consistent on a narrower point: damp and mould in the home should be addressed, exposure can cause or worsen respiratory and allergy-type symptoms in some people, particularly those with asthma or existing allergies, and the recommended response is to fix the moisture problem and remove the growth. Our mould allergy symptoms guide and our mould and asthma guide cover this mainstream position in more detail. Neither of those pages, nor this one, makes the CIRS-specific claims described above.
If you feel unwell and suspect your home is the cause
Whatever framework you find persuasive, the practical steps are the same and don’t depend on resolving the CIRS debate first:
- See a GP. A doctor can assess your actual symptoms, consider other, more established causes, and refer you on to a specialist, such as a respiratory physician, immunologist or allergist, if appropriate. This is true whether or not you also believe CIRS specifically applies to your situation.
- Get the building assessed independently. A mould inspection and moisture investigation can confirm whether there is a real, quantifiable moisture and mould problem in your home, and where it’s coming from, regardless of what turns out to be causing your symptoms.
- Treat the building problem on its merits. If mould and damp are confirmed, addressing them is a reasonable step for general health and property reasons, independent of any specific illness claim.
- Be cautious of treatment protocols sold alongside a CIRS diagnosis. Some CIRS-branded testing and treatment plans carry significant out-of-pocket cost and are not supported by the kind of evidence base that would justify that cost within mainstream medicine. If you’re considering one, it’s reasonable to ask your GP for their view first.
Why we’re cautious about this topic
As a mould removal business, it would be easy to lean into contested health claims that make mould sound more frightening than the mainstream evidence supports, because fear sells remediation work. We’d rather not do that. If your home has mould, we think it’s worth fixing regardless of which health framework you find convincing, because damp building fabric is a genuine problem on its own terms. But we’re not going to tell you CIRS is a settled, recognised diagnosis when the mainstream medical position is that it isn’t, and we’re not qualified to make that call in either direction. That’s a conversation for your GP and, if needed, a specialist.
FAQs
Is CIRS a recognised medical diagnosis in Australia?
No. It is not listed in the standard diagnostic classifications used in mainstream Australian medicine, and mainstream medical, immunology and allergy bodies do not currently recognise it as an established diagnosis. It remains a contested framework promoted by a subset of practitioners.
Does that mean mould definitely can’t be making me unwell?
No. It means the specific CIRS framework and its associated tests are not validated by mainstream medicine, not that mould exposure is harmless. Mainstream health guidance does recognise that mould and damp indoor environments can cause or worsen respiratory and allergy-type symptoms in some people. A GP is the right person to assess your specific symptoms.
Should I get the biomarker or VCS tests associated with CIRS?
That’s a decision to make with your GP, ideally before paying for testing marketed specifically around a CIRS diagnosis. Because these tests are not part of mainstream diagnostic pathways, it’s worth understanding what they can and can’t actually tell you, and what they cost, before proceeding.
If a practitioner diagnoses me with CIRS, should I still get my home inspected?
Getting the home properly assessed for mould and moisture is reasonable advice regardless of the diagnosis attached to it. A mould inspection tells you whether there’s a genuine building problem and what’s causing it; that’s useful information on its own, independent of any specific health claim.
Where can I read a mainstream view on mould and health?
NSW Health, the Better Health Channel and healthdirect all publish general public health information on mould and indoor air, and mainstream immunology and allergy colleges are the appropriate source for a clinical view on chronic multi-symptom illness. We’d rather point you to those sources than present ourselves as a health authority.
Get the building side sorted
Whatever you make of the health debate, if there’s visible mould or a persistent musty smell in your Illawarra home, we can tell you honestly what’s there and what it would take to fix it, no health claims attached. Get a free quote.