Hayfever Types (allergic rhinitis)
Seasonal: Symptoms of seasonal allergic rhinitis can occur in spring, summer and early autumn. They are usually caused by allergic sensitivity to airborne mould spores or to pollens from grass, trees and weeds.
Perennial: People with perennial allergic rhinitis experience symptoms year-round. It is generally caused by dust mites, pet hair or dander, cockroaches or mould.
You may even have both types in which case you could be suffering all year round, though worse in the spring.