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Hay Fever Season in Japan - Pollen Dispersal Forecast for 2015

Post: Monday January 19, 2015   Author : plazahomes

It is forecasted that the start time of pollen dispersal this year will be earlier compared to a typical year, and generally the amount of dispersal is expected to be the same level as an average year. However, early preparations are recommended and also keeping your eyes on the dispersal forecasts; especially in the Kanto-Koshin regions, where pollen dispersal is forecasted to be 2-3 times compared to last year when the dispersal was only a little.

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The latest pollen dispersal forecast for 2015 announced by the Japan Weather Association on December 3rd, 2014 is as follows:

 

 

 

Nationwide Overview:

It is forecasted that the start of the cedar pollen dispersal is earlier in the spring of 2015 than on an average year, and hay fever season will begin in Kyushu, Shikoku, and Tokai districts in the beginning of February. It is also forecasted that the temperature in January and February in 2015 will be an average level or higher in Western Japan and also in the Eastern districts, and so the start of pollen dispersal will be pushed forward in these districts. Consequently it is anticipated that the start of pollen dispersal in the regions from Kyushu to Kanto is earlier than on an average year.

 

The amount of dispersal in 2015 is forecasted to be less or slightly less than an average year in Kyushu and Kinki regions; to be an average level in the regions from Tokai to Tohoku; and to be a little more than an average year in Hokkaido.

 

However, this year’s dispersal amount is anticipated to be 2-3 times more, compared with the last year in Hokuriku, Kanto-Koshin, and Tohoku regions where the dispersal was only a little last year. Caution is necessary in Tokyo because this year’s dispersal may be more than double than the last year.

On the other hand, it is anticipated that the dispersal amount will be very little this year in Kyushu and Shikoku regions, where last year’s dispersal was more than on an average year, and consequently in Fukuoka this year’s dispersal may be 1/3 compared with the last year.

 

 

 

The Amount of Pollen Dispersal:

The amount of pollen dispersal is affected by two of the following factors:

1. Weather condition, especially sunshine duration, precipitation and temperature between June and July of the
   previous year. For example, if the temperature is very high and the duration of sunshine longer, cedar trees grow
   very well and this causes a large amount of pollen dispersal in the following year.

2. The amount of pollen dispersal alternates each year. In other words, the year after significant pollen dispersal
   tends to be less pollen dispersal.

Last summer (year 2014) there were many areas of high temperature in Hokuriku, Kanto-Koshin, and Tohoku regions. But in Kyushu and Shikoku regions it was low temperature, little sunshine, and much rain as a whole, and such weather conditions made it difficult for flower buds to form. Consequently this year’s dispersal is anticipated to be an average level or slightly more than an average year in East and North Japan districts; but to be less than average in many regions of West Japan district.

 

 

 

About the latest therapeutic drugs for hay fever

On January 17, 2014 a new medicine has been approved by Ministry of Health, Labour and Welfare, which has potential for a complete cure of the cedar pollinosis. It is called Sublingual immune therapy medicine "CEDARTOLEN® ". The new medicine is epoch-making in its method of treatment because you only drop the medicine solution under the tongue like eye-drops, wait for two minutes, and just swallow it. Clinical trials show that a suppressant effect of symptoms can be seen after one and a half years of one dose per day. This treatment is available for patients who are 12 years or older and the treatment needs to be administered for 2-3 years.

 

The medicine has been released for sale in October, 2014, and treatment has already started at specialized medical institutions. Of course this treatment is covered by medical insurance. Expectation for widespread use of this new medicine is becoming higher among medical specialists because there is no pain of injection and the burden on patients is small; there is no need to go to the hospital; and the side effects of injection can be reduced.

 

It is recommended that you should consult with a specialized medical institution for further details of the medicine and possibility for treatment.

 

 

 

 

What is “hay fever”?  

Why do so many people suffer from hay fever in Japan?


 Article Hay Fever

 

 

 

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