Mold toxicity is often the end result with constant exposure to mold of a toxic substance.  A common misconception among allergists who are untrained in this type of toxicity levels in humans, which is technically not their area of expertise unless they have trained specifically in environmental medicine with their  background in immunology, is to do general allergen testing.  Most tests usually result in an unequivocal result, a 2+ or less.  This induces some physicians to order allergy shots, regardless.  These shots are absolutely worthless (and could possibly be harmful) to a person who has been heavily exposed to these mycotoxins as they are already in a state of toxicity.  If anything, this could exacerbate the problem.  Because many doctors are not trained in this field, they may try to “guess” at a diagnosis. 

http://www.mold-survivor.com/symptoms.html