Field Guide

CIRS / Mold Biotoxin Illness

Chronic Inflammatory Response Syndrome describes a persistent innate-immune activation triggered by biotoxins — most often water-damaged buildings and mold exposure.

A way to picture it
For roughly 1 in 4 people, mold biotoxins are like a smoke alarm that gets stuck on. The exposure ends but the alarm keeps blaring — creating inflammation everywhere.
What's actually happening

In plain English

CIRS (Chronic Inflammatory Response Syndrome) is a persistent innate-immune activation triggered by biotoxins — most commonly from water-damaged buildings. Genetically susceptible people (~24% of the population, based on HLA type) can't clear these toxins efficiently.

The toxins stay bound to fat and protein, and the immune system keeps firing long after you leave the building. Symptoms are famously diverse: static shocks, ice-pick pains, unusual thirst, air hunger, word-finding trouble, exercise crashes.

Diagnosis follows the Shoemaker Protocol: a specific pattern of visual contrast sensitivity, biomarkers (C4a, TGF-β1, MMP-9, MSH), and HLA typing.

Body systems affected

Where you feel it

Immune system
Inflammation, allergies, defense
Brain & cognition
Focus, mood, memory
Hormones & endocrine
Thyroid, adrenal, sex hormones
Cellular energy
Mitochondria, ATP production
How it develops

The step-by-step

  1. 1
    Exposure

    Time spent in a water-damaged building (workplace, school, home) inhales biotoxins.

  2. 2
    Failure to clear

    In susceptible people, toxins bind to fat/protein and are not tagged for excretion.

  3. 3
    Innate immune loop

    Complement and cytokines fire continuously, producing multi-system inflammation.

  4. 4
    Symptom cluster

    13+ signature symptoms across neurologic, musculoskeletal, GI, urinary systems.

The clinical picture

Symptoms, causes & labs

Common symptoms
  • Symptoms worse in certain buildings
  • Static shocks, ice-pick pains, unusual thirst/urination
  • Vision changes, difficulty finding words
  • Post-exertional fatigue
Possible root causes
  • Exposure to a water-damaged building
  • Genetic HLA susceptibility (~24% of population)
Labs a practitioner may consider
  • VCS (visual contrast sensitivity)
  • Urine mycotoxins
  • C4a, TGF-β1, MMP-9, MSH panel
  • HLA-DR typing
Where you have leverage

Common lifestyle changes that help

These are the foundational shifts most often used alongside clinical care for this pattern. Start with one; layer in the next only when the first feels automatic. Discuss anything major with your practitioner.

  • Identify and REMOVE the exposure — remediation or relocation is non-negotiable
  • HEPA air filtration and dehumidification (keep indoor humidity 30–50%)
  • Test water-damaged buildings with an ERMI/HERTSMI-2 before returning
  • Support drainage: bowels, sweat (sauna if tolerated), lymphatics
  • Low-amylose, low-mold diet during recovery; work with a Shoemaker-trained clinician
When to seek care

Red flags — don't wait

  • Rapid cognitive decline
  • Severe air hunger or new heart symptoms
  • Any acute respiratory illness — mold exposure can worsen asthma
Foundational levers

Supportive habits to discuss

  • Identify and remove the exposure first — no amount of binder therapy fixes ongoing exposure
  • Test the environment (ERMI or HERTSMI-2) before assuming it's safe
  • Work with a Shoemaker-certified or CIRS-literate practitioner

Is this pattern showing up in your body?

Take our physician-designed assessment — 8 minutes, 80 questions across 25 root-cause categories.

Related categories

Medical disclaimer

This page is educational only. It is NOT medical advice, diagnosis, or treatment. Do not self-treat based on the information here. If you have symptoms, consult a licensed healthcare professional.