Is it Mold Toxicity or CIRS – Chronic Inflammatory Response Syndrome?
July 3, 2026
Fact- Mold toxicity and CIRS are not always the same thing.
They can overlap big time. They can both make you feel like your body has been hijacked. They can both trigger fatigue, brain fog, histamine issues, anxiety, insomnia, sinus problems, hormone chaos, and gut dysfunction. They can both steal away your life.
But clinically? They are not identical.
Both involve mold (though CIRS is also associated and caused by other things like Lyme, coinfections, actinobacteria, endotoxins, etc), but their treatments are different 💡
✔️ Mold toxicity is often the “trigger”: exposure to mold and mycotoxins that overwhelm the body and create symptoms like fatigue, brain fog, anxiety, histamine issues, sinus symptoms, hormone shifts, headaches, dizziness, and inflammation. Symptoms get better with getting out of mold & respond well to more natural detox support & natural binders.
✔️CIRS, or Chronic Inflammatory Response Syndrome, is when the immune system gets STUCK in the inflammatory response after exposure❗️ Think: the body can’t fully shut off the fire alarm, even after you leave the water-damaged building! CIRS requires more support and resetting & fixing the immune system.
This is why some people feel better after:
✔️ leaving the moldy environment
✔️ using binders
✔️ sweating/sauna
✔️ supporting liver, bile flow, gut, minerals + lymph
They had just toxicity… but others stay reactive, inflamed, exhausted, histamine-intolerant, or “mold sensitive” even after removing exposure. They may have CIRS. (Or have other things not addressed like Lyme, SIBO, parasites, yeast, etc)
CIRS treatment is more like treating an infected cut – you still need support, but you also need to address the immune dysregulation and biotoxin burden keeping you stuck😅
CIRS treatment is more like treating an infected cut – you still need support, but you also need to address the immune dysregulation and biotoxin burden keeping you stuck😅
This is why I created my new Mold Toxicity + CIRS Symptom & Testing Guide.
Inside the guide, I walk you through the difference between a mold toxicity pattern and a CIRS pattern, the Shoemaker symptom clusters, the VCS test, and the common labs used in a CIRS-style workup.
Here are a few clinical gems from the guide:
1. CIRS is not diagnosed by one symptom.
Feeling awful after mold exposure matters, but CIRS is more of a pattern than a single symptom.
According to Shoemaker-style symptom cluster screening, having at least 1 symptom in 6 of the 13 symptom clustersmeans CIRS should be considered.
Having symptoms in 8 of the 13 clusters suggests a higher probability pattern that warrants deeper evaluation.
2. Some of the most missed mold/CIRS symptoms are not obvious.
When people think mold, they usually think sinus issues or allergies.
But I often see symptoms like:
• Static shocks
• Air hunger
• Feeling drunk or hungover without alcohol
• Chronic insomnia
• Dizziness upon standing
• Increased thirst + urination
• Feeling detached or depersonalized
• Chronic histamine issues
• New chemical sensitivities
• Chronic SIBO, H. pylori, candida, or gut infections
• Feeling worse in certain rooms or buildings
• Feeling better on vacation, then worse when returning home
3. A VCS test can be helpful, but it is not the whole diagnosis.
The VCS test looks at visual contrast sensitivity, which can be affected by biotoxin-related neuroinflammation and changes in blood flow.
But-If you pass the VCS test, it does not fully rule out mold toxicity or CIRS.
If you fail the VCS test, it does not automatically confirm CIRS.
It simply suggests there may be a visual/neuroinflammatory issue that deserves deeper investigation.
Translation: use it as one piece of the puzzle, not the whole story.
4. CIRS labs help show the immune/inflammatory pattern.
Some commonly used markers in a CIRS-style workup include:
• MSH
• VIP
• ADH + osmolality
• C4a
• TGF-beta1
• MMP-9
• VEGF
• ACTH + morning cortisol
• C3a
• Leptin
• HLA-DR/DQ
• VCS testing
But remember: labs should never be interpreted in isolation.
The most helpful picture comes from connecting symptoms + exposure + labs + clinical context.
5. If detox makes you feel worse, drainage and inflammation may need more attention first.
This is one of the biggest mistakes I see! People jump straight into aggressive binders, antifungals, sauna, glutathione, or “kill everything” protocols when their body is already inflamed, constipated, nutrient depleted, histamine reactive, and stuck in fight-or-flight.
Before pushing harder, sometimes the better first move is:
• Remove or reduce exposure
• Support bowel regularity
• Hydrate + replenish minerals
• Calm the nervous system
• Support bile flow + drainage
• Eat enough protein
• Stabilize blood sugar
• Address histamine/mast cell flares
• Then detox more strategically
My guide has a LOT of info. It will help you understand whether your symptoms look more like a general mold toxicity pattern, a possible CIRS pattern, or a situation where deeper testing may make sense.
Please remember: this is not meant to make you panic or self-diagnose. I know mold can be scary. I am not hear to create fear. I am here to educate. This guide is meant to help you connect the dots, ask better questions, and stop gaslighting yourself when your body is clearly telling you something is off.
Work with me- check out my service options
As someone who has CIRS from Lyme and has had mold toxicity several times- I get it can be confusing. Don’t hesistate to each out to me for support!
Love, Lacey Dunn Holland, MS, RD, LD, CPT
