While not a body system, pain as a symptom of mold toxicity deserves special attention. Mold toxic patients suffer more pain for a variety of reasons. Damage to the nervous system alters how pain is perceived. Tissue damage and impaired healing processes create ample opportunities for pain. Excessive histamine can trigger migraines in some and irritable bowel pain in others. Many individuals diagnosed with fibromyalgia, a disease of increased pain, have mold toxicity underneath their symptoms. Unfortunately, mold toxicity sufferers can hurt and hurt without seeming explanation for long periods of time until they receive proper root cause diagnosis and therapy.