Saisons d'allergie : quand et pourquoi
Seasonal allergies, also known as allergic rhinitis or hay fever, affect approximately 20-30% of the global population. These allergies are triggered by airborne pollen from trees, grasses, and weeds, as well as mold spores. The timing and severity of allergy season varies significantly by geographic region and climate. In temperate regions, tree pollen typically peaks from February through May, grass pollen from May through July, and weed pollen from August through October. Mold spores tend to peak during warm, humid months from July through November. Understanding your local pollen calendar can help you anticipate symptoms, begin preventive medications before the season starts, and plan outdoor activities during lower-pollen periods.