Cladosporium, a common allergen, can grow in a variety of environments across the United States. It often thrives in warm and damp locations, making areas with high humidity or frequent rainfall particularly hospitable. This includes homes in humid climates and, indoors, in damp areas like bathrooms and basements. In addition, Cladosporium can be found growing on decaying plants and plant materials, dead leaves, compost, grass, and soil throughout the country, making it present in many outdoor environments. Notably, it also grows in mild, temperate climates, which means it can be found in most regions of the United States, regardless of the time of year.

Indoor growth

• Bathrooms and Basements: These damp areas of the home are common places for Cladosporium to grow.
• Homes in Humid Climates: The increased moisture in the air can provide the perfect environment for this allergen.

Outdoor growth

• Decaying plants and Leaves: These provide ample food for the fungi to grow and multiply.
• Soil and Compost: Cladosporium can grow here due to the moisture and organic matter available.
• Grass: This allergen may grow on grass, particularly if the area is damp and shaded.

Cladosporium is a type of mold, and diet doesn't usually have a direct impact on mold allergy symptoms. However, some foods may contain mold or encourage mold growth, potentially worsening allergy symptoms in sensitive individuals.

Foods that Could Worsen Cladosporium Allergy

• Cheeses: Moldy cheeses, or cheese produced with mold such as blue cheese, could potentially worsen symptoms.
• Alcoholic Beverages: Certain types of alcohol, particularly beer and wine, can promote the growth of mold and yeast.
• Fermented Foods: Foods like pickles, sauerkraut, and sourdough bread can contain mold or yeast.
• Dried Fruits: Dried fruits can sometimes contain mold if they're not properly stored or if they're kept in humid conditions.
• Moldy or Stale Bread: Bread that's gone moldy or stale can potentially worsen allergy symptoms.

At the same time, some foods may contain histamine, a compound that's released in the body during an allergic reaction. Eating histamine-rich food may possibly exacerbate allergy symptoms. Such foods include certain types of fish like mackerel and tuna, cheese, sauerkraut, and processed meats. Do inform your doctor if you suspect foods are worsening your allergy symptoms, as they could provide appropriate advice or treatment.