<unk> s are ubiquitous, and<unk>  spores are a common component of household and workplace dust; however, when<unk>  spores are present in large quantities, they can present a health hazard to humans, potentially causing allergic reactions and respiratory problems. Some<unk> s also produce mycotoxins that can pose serious health risks to humans and animals. Some studies claim that exposure to high levels of mycotoxins can lead to neurological problems and in some cases, death. Prolonged exposure, e.g. daily home exposure, may be particularly harmful. Research on the health impacts of<unk>  has not been conclusive. The term "toxic<unk> " refers to<unk> s that produce mycotoxins, such as Stachybotrys chartarum, and not to all<unk> s in general.<unk>  in the home can usually be found in damp, dark or steamy areas, e.g. bathrooms, kitchens, cluttered storage areas, recently flooded areas, basement areas, plumbing spaces, areas with poor ventilation and outdoors in humid environments. Symptoms caused by<unk>  allergy are: watery, itchy eyes; a chronic cough; headaches or migraines; difficulty breathing; rashes; tiredness; sinus problems; nasal blockage and frequent sneezing.<unk> s can also pose a hazard to human and animal health when they are consumed following the growth of certain<unk>  species in stored food. Some species produce toxic secondary metabolites, collectively termed mycotoxins, including aflatoxins, ochratoxins, fumonisins, trichothecenes, citrinin, and patulin. These toxic properties may be used for the benefit of humans when the toxicity is directed against other organisms; for example, penicillin adversely affects the growth of Gram-positive bacteria (e.g. Clostridium species), certain spirochetes and certain fungi.
Mold
Chyme
Straw 
Stye
Keloid
Cold
Toxoid
Boil