Allergens 101

Alternaria Alternata Allergy

Alternaria tenuis

Known as a cosmopolitan mold, alternaria alternata is one of the most frequent fungal sensitizers. It is also the most common mold in dry, warm climates and can be found both outdoors (e.g., soil, plants) and indoors (e.g., wood, window frames).

Common Alternaria Alternata Allergy Symptoms"

  • Hay fever

  • Eye allergies

  • Asthma

Where is Mold (A. alternata) found?

This common mold is found in warm, dry climates all over the world. However, sensitization rates vary based on geographic location. More specifically, alternaria alternata affects ~5% of the world’s population but 38% of the United States population, making it the most common mold allergy in America.

Alternaria alternata is responsible for 20% of agricultural yield losses each year.


Recommended solutions

Alternaria alternata is predominantly found outdoors. Try to avoid areas with high allergen/spore counts and use a mask when outside if possible. This mold can also be found indoors and the below mold reduction measures should be taken to prevent/reduce symptoms. If you would like to prevent your allergies from progressing or are looking for long-term relief, talk to your doctor about allergy immunotherapy or find out if you are eligible for NectarRx Allergy Treatment.

  • Avoid areas with high spore counts

  • Conduct indoor fungi presence tests regularly

  • Limit the use of humidifiers or cool mist

  • Frequently clean carpets and air purifiers

  • Conduct regular maintenance of ventilation systems

  • Use Benadryl, Claritin, or Zyrtec as needed

  • Treat with allergen immunotherapy