What are the symptoms associated with Cladosporium herbarum exposure?

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Last updated: June 30, 2025View editorial policy

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From the Guidelines

Exposure to Cladosporium herbarum is associated with allergic reactions, respiratory issues, and skin problems, with symptoms including sneezing, runny or stuffy nose, itchy or watery eyes, and throat irritation. The symptoms of Cladosporium herbarum exposure can vary depending on individual sensitivity and the concentration of mold spores.

Common Symptoms

  • Sneezing
  • Runny or stuffy nose
  • Itchy or watery eyes
  • Throat irritation
  • Skin rashes or hives

Respiratory Issues

In individuals with asthma, Cladosporium exposure can trigger:

  • Wheezing
  • Chest tightness
  • Coughing
  • Shortness of breath Those with compromised immune systems may experience more severe respiratory infections, while people with chronic lung conditions might develop hypersensitivity pneumonitis, characterized by:
  • Flu-like symptoms
  • Fever
  • Chills
  • Dry cough
  • Shortness of breath Although a study on allergen immunotherapy suggests that allergen immunotherapy with fungi might be effective 1, the primary concern is reducing exposure to prevent symptoms. Reducing exposure by controlling indoor humidity, improving ventilation, and cleaning visible mold can help manage symptoms, while antihistamines, nasal corticosteroids, or bronchodilators may provide relief depending on symptom type and severity.

From the Research

Symptoms Associated with Cladosporium herbarum Exposure

The symptoms associated with Cladosporium herbarum exposure include:

  • Allergic reactions, such as rhinitis and ocular symptoms 2, 3
  • Severe involvement of the lower respiratory tract, including asthma 2, 4
  • Histamine release from human basophils, leading to symptoms such as itching, sneezing, and congestion 2
  • Increased IgE reactivity, which can lead to allergic inflammation and hyper-reactivity 2, 3
  • Airway hyperreactivity and remodelling, which can lead to chronic respiratory problems 5

Specific Symptoms Reported in Studies

  • Asthma score and peak flow changes 4
  • Consumption of antiasthmatic medication 4
  • Large local reactions and episodes of asthma during dose-increase phase of immunotherapy 4
  • Systemic reactions, including severe reactions 4
  • Eosinophil-rich airway inflammation, airway hyperreactivity, and airway wall modifications 5

Population Affected

  • Patients with allergy, particularly those with severe asthma 2, 4
  • Individuals with a history of mold exposure or sensitivity 3, 5
  • People living in areas with high levels of Cladosporium herbarum spores 2, 3

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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