The following list is taken from the book Mold Warriors by Dr. Ritchie Shoemaker. These are symptoms of biotoxin illness (biotoxin definition: poison produced by and derived from an animal or plant).

According to Dr. Shoemaker, "Symptoms exhibited from the exposure to biotoxins affect everyone differently. This extensive listing is here to help you understand the many ways biotoxin illness can manifest itself. This listing does not mean that those who suffer from biotoxin illness will exhibit all of the symptoms listed here."

Toxicity and mental health go hand in hand.

Dr. Laura Mark, a Board Certified psychiatrist, writes about this in the book Surviving Mold. Her health began to deteriorate in 1995 at the age of 40, when she joined the staff of a state-run psychiatric hospital. Over the next five years she developed stabbing headaches, itchy rashes, joint swelling, fatigue, irritable bowel syndrome, carpal tunnel syndrome in both hands, abdominal pain, mood swings, difficulty concentrating, and memory loss. Others in her workplace complained of similar symptoms. She left the position and experienced improved health, until she took a job at a 200-year-old satellite clinic in a rural town. Her story continues from there. A story of compromised indoor air quality, declining health, and the impact of musty, moldy conditions on the clinic's patients.