I thought I saw a grass!

With the approach of spring, the alternations of rain and fine weather initiate your desires of open air. But beware, these hesitations of the sky accelerate the ripening of plants and thus promote the hay fever. Grass station with very strong potential allergens!

Green pollution, only seasonal?

The victims of the famous hay fever are four times as numerous as they were thirty years ago. The enemies are varied but not all have the same allergenic power. Among the champions, grasses poison the lives of a large part of the population.

Treatments to put the nose out

In charge of pollen monitoring, the National Aerobic Monitoring Network (NNSA) performs regular measurements in the atmosphere. These data allow doctors and patients to know the importance and nature of pollination for each region.

These plants have long narrow leaves, inserted on the stem or in tufts, sometimes of large size. They are commonly found in prairies, but also on rocks, in the forest, or in ditches, & c. The most common are tares, bluegrass, wheat, rye, barley, oats, dune oyat, reeds or maize. These plants have a strong allergenic potential. >

Grasses, pariets, alders, jobs, cypresses ... The nature and the quantity of pollens vary considerably according to the regions and the climatic conditions. It is customary to say that pollinosis is a seasonal disease. The most classic manifestation of allergy, the hay fever, intervenes thus from spring to the beginning of the summer, period of pollination of the grasses. To learn more about the allergic reaction, discover our animation "Allergy in pictures".

But other allergens persist beyond this period. Herbs such as ragweed, mugwort or chenopods may persist until the fall. Thus, much of the year, allergenic pollens may be present in the atmosphere. This omnipresence has unfortunate consequences for people polysensitized (sensitive to several pollens) who can suffer from rhinitis almost nine months of the year!

In addition, once the person is reactive to a pollen allergen, contact with a body resembling that substance will result in the same consequences. These manifestations are called cross-allergies. Thus, close grasses may cause reactions of this type. But the links also exist with food: half of the victims of rhino-conjunctivitis against birch, hazel or alder pollen are sensitized to apple, hazelnut and peach.
Discover the main allergies crossed between pollen and food



Pollen of birch

Apricot, almond, brugnon, carrot, celery, kiwi, peach, hazelnut, walnut, apple, potato

Dill, carrot, caraway, celery, coriander, fennel, parsley

Pollen of ambroise

Banana, melon, watermelon

Grass pollen

Peanut, Tomato


Apricot, avocado, banana, chestnut, cherry, fig, passion fruit, kiwi, papaya, buckwheat



Bird feathers



Horse meat


Pork meat

To determine all of these cross allergies, tests can be performed in the allergist but the treatment will always target the initial allergen.

Management is based on the identification of the allergen involved. A clinical interrogation on the signs, the circumstances of appearance and possibly tests will make it possible to find the culprit (s). Faced with the symptoms, the doctor can resort to

In addition, preventive measures should be taken. They reside mainly in the avoidance of the responsible factor. For pollens, this strategy is not always easy, if not for the place of vacation: prefer the beach to the mountain. Sometimes, preventive antihistamine treatment in the spring can improve things.

Allergy treatments

Antihistamines in tablets: these are drugs that inhibit the action of histamine, the substance that releases the body in contact with pollen and which causes allergic reactions. They are effective on sneezing and tingling of the nose Local corticosteroids, which have an anti-inflammatory role and decrease sneezing and nasal obstruction