But others suffer from it for the rest of their lives and may even develop asthma. So hay fever should be diagnosed and treated by a doctor so that you get the best possible quality of life. Hay fever may be connected to other allergies . For instance people who are allergic to birch pollen are often allergic to things such as nuts and green apples. This is because the same protein which causes the allergy is found in these things too.
Hay fever begins because of a sensitivity to proteins that occur naturally in our surroundings.
People are born with this sensitivity and they are more likely to suffer from hay fever if either of their parents also suffered from allergies. If a person is born with a sensitivity to birch pollen for example, the first time they come into contact with it they will become sensitised and their body will begin to develop a different pattern of reactions towards birch pollen. The different pattern of reactions causes the allergy cells in the mucous membranes in the nose, mouth and throat to become inflamed. The histamine in your body is released and this causes the hay fever reaction the next time they come into contact with birch pollen. If you know what you are allergic to, you can try to avoid the substance or ask your doctor for a preventive treatment.