What Is Mold Illness and How Does It Affect the Body?

Understanding the condition that brings many of our guests to Eagle

Mold illness — sometimes called Chronic Inflammatory Response Syndrome (CIRS) — is a condition triggered by exposure to water-damaged buildings and the biotoxins they produce. It is more common than most people realize, and more serious than it is often taken.

What causes it: When a building experiences water damage, mold and other microorganisms begin to grow. These organisms produce biotoxins — chemical compounds that can enter the body through inhalation, ingestion, or skin contact. For most people, the immune system identifies and clears these toxins without difficulty. But for approximately 25% of the population, a genetic variation in the HLA-DR gene means the immune system cannot properly tag and remove these toxins. They accumulate, and the inflammatory response they trigger becomes chronic.

What it feels like: Mold illness presents differently in different people, which is part of why it is so frequently missed or misdiagnosed. Common symptoms include:

• Fatigue and weakness that doesn't improve with rest

• Cognitive difficulties — brain fog, memory problems, difficulty concentrating

• Headaches

• Sensitivity to light and sound

• Joint pain and muscle aches

• Respiratory symptoms — shortness of breath, chronic cough, sinus congestion

• Mood changes — anxiety, depression, irritability

• Sensitivity to chemicals, fragrances, and environmental triggers
  

Why environment matters so much: For people with mold illness, continued exposure to biotoxins — even at low levels — keeps the inflammatory response active and prevents recovery. This is why leaving the affected environment is often a critical first step in treatment, and why a certified clean, mold-free space to stay during that process can make a meaningful difference.

If you suspect mold illness, seek a provider experienced in CIRS diagnosis and treatment. A good starting point is the Surviving Mold website (survivingmold.com) and the Shoemaker Protocol.