Allergy & Asthma Care Information - mold avoidance

Indoor molds:

These molds and mildews grow normally in soils and decaying plant materials and can occur on damp window sills, heating ducts, house plant soils, rugs and pads which had been wet previously, walls and surfaces which are damp from outside or inside moisture, floors of bathrooms and any other damp or humid rooms – or in basements and crawl spaces under homes.

Outdoor Molds:

These microscopic fungi grow on fallen leaves, freshly cut grass, damp shady areas and in soil everywhere. They can also thrive in rotting wood and standing water. They occur year round, but are most likely to trigger symptoms during rainy months of the year (October through May ). Rain triggers surface molds on soils or plants to release numerous tiny spores into the air which also blow into homes as dusts.

How Molds cause Allergies and Asthma: Mold spores (like seeds) blow in the air and are then breathed in through the nose and mouth or land on the eyes. These spores may trigger all the same seasonal “seasonal hayfever” symptoms that are typically associated with pollen allergies. They also can trigger chest tightness, wheezing & sudden bouts of asthma.

Mold spores become problematic as the wind blows them about, and they are particularly numerous after a rainy spell. People often have trouble after rain storms, working in fields or gardens or turning the soil. Molds are especially problematic indoors. Old mattresses and pillows, older furniture or objects from storage, old books, heat ducts etc. all can build up dusts containing mold spores. Once mold begins to grow on wood, insulation, or plaster in floors or walls it is difficult to eliminate entirely and can cause difficult, at times, sudden onset-severe or allergies and asthma.

If you would like additional detailed information on mold avoidance, contact us and make an appointment at our clinic.



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Located in Medford, Oregon with satellite offices in Grants Pass, Ashland, and Klamath Falls, the Allergy and Asthma Center of Southern Oregon, PC offers exceptional care for patients with allergies and asthma.

Allergy & Asthma Information

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