In case of respiratory allergies, the immune system falsely reacts to substances in the environment (e.g. dust mites, ragweed, animal hair) as if they were harmful. Such substances are called allergens. An excessive immune response triggers an allergic reaction in the body. Respiratory allergies can be associated with inflammation of the nasal mucosa (allergic rhinitis, also known as hay fever), but can also affect the entire bronchial system (allergic asthma).
Hay fever, also known as allergic rhinitis (rhinitis allergica), is an allergic reaction to various microscopic substances, pollens, or mold. In terms of types, it can be seasonal as well as perineal (year-round). Seasonal hay fever occurs in spring, during the flowering season of plants, while in summer, grasses and grains cause symptoms.
In the case of perineal hay fever, the symptoms can be caused by mold, house dust or animal hair. These allergens can trigger an allergic reaction at any time of the year. They can also be found in our immediate surroundings at home, in curtains, carpets, upholstery, or in blankets or pillows. Hay fever is the most common allergic disease, affecting 10 to 15 percent of the population. Its main symptoms are sneezing, runny nose, nasal congestion, itchy and teary eyes.