In the case of allergic rhinitis, a distinction is made between seasonal allergic rhinitis (hay-fever, pollinosis), which occurs primarily during
spring and summer, perennial allergic rhinitis (e.g. house dust mite
allergy) and occupational allergic rhinitis.
Allergic rhinitis has been on the increase in the last few years.
Various reasons are being discussed as being the reason for this, including better hygiene, an increase in the aggressiveness of harmful allergens as well as changes in living habits.
An allergy is an excessive defence reaction of the immune system to specific and normally harmless environmental substances, which manifests itself in typical processes triggered by inflammatory
processes. These lead to the release of various substances, e.g. histamine, which plays a central role in allergic reactions in humans