What is the difference between seasonal and perennial allergic rhinitis?
Seasonal allergic rhinitis is triggered by outdoor allergens like pollen that appear during specific times of the year, typically spring through autumn. Perennial allergic rhinitis is caused by indoor allergens such as dust mites, pet dander, and mould that are present year-round. The key distinction is that seasonal allergies come and go with the seasons, whilst perennial allergies persist throughout the year.
Key points:
- Seasonal allergies are triggered by tree, grass, and weed pollen during warmer months
- Perennial allergies result from constant exposure to indoor allergens like dust mites and pet dander
- Seasonal symptoms peak during specific seasons and subside when pollen levels drop
- Perennial symptoms occur continuously or intermittently all year long
This text has been fact-checked for accuracy by medino's clinical team.