Brussels

The pollen season of hazel and alder is in approach.

A few pollen grains may be present in the air for the moment, released by trees which are favourably situated.

Allergy symptoms can occur in people highly sensitized to these pollen types and  living in close proximity to these trees.

 

 

Good to know:

Each year some individuals highly sensitized to Betulaceae pollen ( hazel, alder, birch) report early symptoms of allergy before the pollination period. This phenomenon has been described in literature and according to some authors, it should be due to the presence in the air of especially small-sized allergenic particles from these plants.