Hay fever is a fever that is actually related to the allergic diseases. The medical term that is used for this disease is Allergic rhinitis. The main cause of this kind of fever is the presence of the pollens in the human bodies. They are actually caused by some of the pollens emitted by certain trees on this planet. But one thing is very important about the hay fever is the fact that all the people are not prey to the diseases. There are certain people who have the tendency to fall prey to hay fever. This can be easily detected by the help of going through the medical history of the patient.
There are also some of the times of the whole year that are related to the season of hay fever. It has been noticed that attacks of the pollens are dangerous at these times throughout the year. Among these times the most effective season is during the month of May. In the northern hemisphere it is also a common time for the attack of this disease till the end of the month of June. Although this also is not false that a person can suffer from hay fever throughout the whole year still the concepts of certain times are considered with attention.
The main trouble takes place because the people have the allergic tendency to the certain kinds of pollens that are common among some of the trees and especially in their flowers. Animal dander can also be another source of the pollens that can bring the threat of hay fever. Among the trees that are the source of these kinds of pollens the mentionable ones are birch, hornbeam, chestnut, olive, willow, hazel and many others as well.
Apart from the trees some kinds of grasses are also responsible for the spread of hay fever. They are ryegrass, timothy grass, and others too.
There are also some weeds that should not be kept near the houses of people. This is for the fact that the emission amount of the pollens from these weeds is very high. Among them the mentionable ones are ragweed, mugwort, Fat hen, dock and many others as well.
The geographical location is also a vital reason for the occurrence of hay fever among people. It has been noticed that some of the trees as well as weeds are not that effective in all kinds of atmosphere. That is why it is always important to know about where the patient lives.
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