Fungal sinusitis is an inflammation of the sinuses caused by fungal infections or allergic reactions to environmental fungi. It is caused by fungi such as Alternaria alternata, Cladosporium herbarum, Curvularia spicifera, and Fusarium solani that trigger immune responses in the sinus cavities. The Respiratory Allergy Panel is the most important test for diagnosis because it identifies specific fungal sensitivities through IgE antibody measurement.
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Fungal sinusitis is caused by environmental fungi including Alternaria alternata, Cladosporium herbarum, Curvularia spicifera, and Fusarium solani that invade or trigger allergic reactions in the sinus cavities. When you inhale these fungal spores, your immune system produces IgE antibodies that cause inflammation and swelling in the sinus tissues. The condition can develop from direct fungal infection in people with weakened immune systems or from allergic reactions in people with normal immunity who are sensitive to these fungi.
The Respiratory Allergy Panel is the most important test for fungal sinusitis because it detects IgE antibodies to specific fungi that trigger sinus inflammation. These regional panels test for common environmental fungi like Alternaria alternata and Cladosporium herbarum that cause allergic fungal sinusitis in your geographic area. For more targeted testing, Allergen Specific IgE tests for Curvularia spicifera and Fusarium solani identify sensitivities to these particular fungi. Positive results indicate your immune system is reacting to these fungi, helping your doctor create a treatment plan that addresses your specific fungal sensitivities.
You should get tested if you have chronic sinus symptoms lasting more than 12 weeks that don't respond to standard antibiotic treatments. Testing is especially important if you notice your sinus problems worsen during humid weather, in damp environments, or during specific seasons when mold counts are high. You should also consider testing if you experience thick nasal discharge, facial pain, headaches, or nasal congestion that persists despite using decongestants and other over-the-counter remedies.
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What this means
Your IgE antibodies to cat dander are moderately elevated, indicating a significant allergic sensitivity to cats. This level of sensitization commonly causes symptoms like sneezing, itchy eyes, nasal congestion, or even breathing difficulty when exposed to cats or environments where cats have been. Even if you don't own a cat, exposure can occur in homes, offices, or on clothing of cat owners.
Recommended actions
Avoid direct contact with cats and limit time in environments where cats live
Use HEPA air purifiers in your home to reduce airborne cat allergen particles
Wash hands and change clothes after visiting homes with cats
Consider discussing allergy medications or immunotherapy with your doctor if avoidance isn't practical
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