The clinical name for this problem describes stuffy and scratchy nose (rhin), one of the most common symptom. Normally hay high temperature is seasonal, but it can last all year long if the allergen remains throughout the year. Hay high temperature, like all allergic reactions, is caused by allergens, foreign “intruders” that enter your body by inhalation, by ingesting, or via your skin. As soon as these allergens come in contact with your air passage, the white blood cells of your immune system generate antibodies to the annoying compound. When the antibody is available in call with the matching antigen, they promote launch of chemicals and hormones called “arbitrators. ” Histamine is an example of a conciliator. The most typical allergens in hay fever are plant pollens. Plant pollen is small fragments launched by flowering plants. Molds are a kind of fungi that has no stems, roots, or leaves. They are present throughout the year in the majority of the United States. Molds expand both outdoors and inside. Inside, mold and mildews (generally called mold) stay in locations where air does not flow easily, such as attic rooms and cellars, damp places such as bathrooms, and areas where foods are stored, prepared, or discarded. The amounts of plant pollen and molds airborne are gauged daily in numerous locations around the United States and reported by the National Allergic Reaction Bureau. The plant pollen and mold matters at which people create sensitive signs differ quite a great deal by person. Pollen and mold and mildew matters are not very valuable in anticipating just how a certain individual will certainly react. Risk elements for hay fever consist of: Relative with hay high temperature. Repeated direct exposure to the irritant. Physical changes of pregnancy might make hay fever worse.