4 : Pollen allergies

This time, I am going to write about pollen allergies.

First, pollen allergies are one of type Ⅰ allergies. These are caused by pollens touch to mucous membrane of eyes or noses and the like, and causes sneeze paroxysmal and repeatability and so on. In japan, pollen allergies of Japanese cedars are the most part of these. Of course, it may cure spontaneously like other type Ⅰ allergies. It is said about 10~20 percent of the patients who is allergic to pollens about that.

It is said that the number of patients who are allergic to pollens are about 30 percent of people in japan now, and about 5~10 percent in America, and more than 15~20 percent in UK, and about 10~40 percent in Australia or Turkey, and about one person per 6 in Canada and about 10~20 percent of people all over the world. And it is also thought that about 30 percent of children under 16 years of age are allergic to pollens. Besides, it is thought that patient of these have increased around 3~4 times in 1970 and doubled in recent decade years.

Next, I will write about symptoms of pollen allergies.

As general symptoms, main symptoms are sneeze and snivel and a stuffy nose and an itch on eyes. As secondary symptoms, because of a stuffy nose, it makes one’s cold and the like by mouth breathing. And, foreign body sensation in eyes, eye mucus, itch in ears, headaches, slight fevers, languors may appear. And it causes digestive symptoms (diarrheas, nauseas, stomachaches and so on) by swallow pollens in mouth or snivels include pollens. And lack of sleep and short attention span, upset and anorexia, low spirits may arise. Depends on quantity and kinds of these, it may causes anaphylactic shocks. However, these symptoms depend on the individual.

Then, it is said that airborne pollen levels are not correlative with symptoms.

Next, I am going to write about botanical causes of pollen allergies.

These are reported to exist more than 60 varieties. Most of these are japanese cedars, and there are many people who have allergies by Japanese cypress and ambrosia artemisiifolias, pine trees, family comprising the true grasses, artemisia vulgaris indicas and other plants. Especially, most of patients who have pollen allergies by japanese cedars are also have Japanese cypress allergies.

Then there are regional differences. In Hokkaido, there are few japanese cedars so pollen allergies of family comprising the true grasses and white birchs are the most. There is a social problem because of alnus firma oillens. And ambrosia artemisiifolia pollen allergies are the most in America, and white birchs are in Northern Europe, and family comprising the true grasses allergies are the most in Europe. Because of go on snuffing particular pollens, it is said that whatever pollens of plants may cause allergies. But is little case that Japanese became rice plant pollen allergies.

In recent years, it is problem that pets have pollen allergies or other any allergies.

I referred to Wikipedia to write this.