Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Hay fever classification
Introduction
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Classification
Classification
The two categories of allergic rhinitis include:
- Seasonal – occurs particularly during pollen seasons. Seasonal allergic rhinitis does not usually develop until after 6 years of age.
- Perennial – occurs throughout the year. This type of allergic rhinitis is commonly seen in younger children.[1]
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]