Risk factorsBy Mayo Clinic staff
A number of factors can make you more likely to develop a mold allergy, or worsen your existing mold allergy symptoms, including:
- Having a family history of allergies. If allergies and asthma run in your family, you're more likely to develop a mold allergy.
- Working in an occupation that exposes you to mold. Occupations where mold exposure may be high include farming, dairy work, logging, baking, millwork, carpentry, greenhouse work, winemaking and furniture repair.
- Living in a house with high humidity. If your indoor humidity is higher than 60 percent, you may have increased exposure to mold in your home. Mold can grow virtually anywhere if the conditions are right — in basements, behind walls in framing, on soap-coated grout and other damp surfaces, in carpet pads, and in the carpet itself. Exposure to high levels of household mold may trigger mold allergy symptoms.
- Working or living in a building that's been exposed to excess moisture. Examples include leaky pipes, water seepage during rainstorms and flood damage. At some point, nearly every building has some kind of excessive moisture. This moisture can allow mold to flourish.
- Living in a house with poor ventilation. Tight window and door seals may trap moisture indoors and prevent proper ventilation, creating ideal conditions for mold growth. Damp areas, such as bathrooms, kitchens and basements, are most vulnerable.
- Mold allergy overview. American Academy of Allergy, Asthma & Immunology. http://www.aaaai.org/conditions-and-treatments/allergies/mold-allergy.aspx. Accessed Nov. 29, 2012.
- Mold allergy. Asthma and Allergy Foundation of America. http://www.aafa.org/display.cfm?id=8&sub=15&cont=58. Accessed Nov. 29, 2012.
- Basic facts: Molds in the environment. Centers for Disease Control and Prevention. http://cdc.gov/mold/faqs.htm. Accessed Nov. 29, 2012.
- A brief guide to mold, moisture and your home. Environmental Protection Agency. http://www.epa.gov/mold/moldguide.html. Accessed Nov. 29, 2012.
- Atopic and allergic disorders. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merck.com/mmpe/print/sec13/ch165/ch165c.html. Accessed Nov. 29, 2012.
- Lalwani AK. Current Diagnosis & Treatment in Otolaryngology - Head & Neck Surgery. 3rd ed. New York, N.Y.: The McGraw-Hill Companies; 2012. http://www.accessmedicine.com/resourceTOC.aspx?resourceID=39. Accessed Nov. 29, 2012.
- Bope ET, et al. Conn's Current Therapy. Philadelphia, Pa.: Saunders Elsevier; 2012. http://www.mdconsult.com/books/about.do?eid=4-u1.0-B978-1-4377-0986-5..C2009-0-38984-9--TOP&isbn=978-1-4377-0986-5&about=true&uniqId=236797353-5. Accessed Nov. 20, 2012.
- Bozeman S, et al. Complications of allergic fungal sinusitis. The American Journal of Medicine. 2011;124:359.
- Allergic bronchopulmonary aspergillosis. The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merckmanuals.com/home/lung_and_airway_disorders/allergic_and_autoimmune_diseases_of_the_lungs/allergic_bronchopulmonary_aspergillosis.html. Accessed Dec. 3, 2012.
- A brief guide to mold in the workplace. Occupational Safety and Health Administration. http://www.osha.gov/dts/shib/shib101003.html. Accessed Dec. 3, 2012.