Background: The condition may be due to allergic reaction, exposure to irritants such as dust or mold, infection with virus, bacteria, yeast, or fungal agent. In horses, it is likely due to a viral infection or irritation.
Symptoms: Excess nasal discharge, wheezing, coughing and gagging, dyspnea and discomfort.
Diagnostics: Physical examination, microscopic smears of the discharge, blood tests.
Principles for Supplementation: Support the immune system; natural treatment is directed at the identified cause, whether viral, bacterial or immune system weakness.