Four Types of Mold That Pose Health Hazards


It is estimated that about 10 percent of the human population experiences an allergy to mold. Most allergic responses related to the presence of mold spores in the indoor home environment involve symptoms similar to allergic rhinitis – more commonly known as “hay fever.” However, a small portion of the population is significantly more sensitive to the presence of mold spores in the atmosphere and may develop severe respiratory conditions or skin rashes as a result of exposure. Following are four types of mold that present health hazards to those with allergic antibodies to fungal antigens.




Commonly found on food and in air ducts, Aspergillus can cause substantial respiratory distress if allowed to become well-represented in the home environment. Those with weakened immune systems or chronic lung conditions are more susceptible to falling ill due to exposure to aspergillus. Most people who suffer from sensitivity to mold only experience a moderate reaction to aspergillus, however, that includes watery eyes, a sore throat and an itchy nose.




Commonly found on living and dead vegetative matter, cladosporium spores are most frequently found in homes where residents cultivate a significant amount of houseplants. It also thrives on surfaces such as the backs of toilets and in fiberglass air ducts. Those with respiratory diseases and conditions such as asthma are particularly susceptible to adverse reactions to this particular mold. A musty odor generally signifies its presence in the indoor home environment.



Stachybotrys Atra

Also known as “black mold,” stachybotrys atra is the most infamous of the various household molds. However, its spores don’t become airborne easily, minimizing potential health hazards involved with its presence in the home. It grows best on surfaces with high cellulose content such as drywall, wood and ceiling tiles as well as areas that have experienced water damage. Symptoms of allergic reactions to stachybotrys atra generally take the form of rashes, rhinitis, and aggravation of existing respiratory conditions. Symptoms generally disappear after appropriate treatment from a professional water damage restoration company has taken place. Water damage is one of the most significant causes of mold, and water damage companies also specialize in mold removal.




Fungi in the alternaria species are commonly found indoors and can cause allergic reactions in humans that resemble hay fever. Opportunistic infections may occur in individuals with compromised immune systems, although these situations are fairly rare.


Keeping household mold at bay is highly dependent on keeping damp and wet surfaces to a minimum.


Information Source: Stover’s Restoration Mold Removal

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