The start of the grass pollen season may vary from one year to the other, but feature rapid rises in pollen counts often around the end of May over much of the country.
There is a lag time between the start of the pollen seasons in the South and North of about two to three weeks. Grass growth is very good with high production of pollen when the weathers warm with occasional rain, the grass pollen season is usually severe if normal british weather conditions during the month of June.
Hay fever is caused by an allergic reaction to proteins contained in the pollen grains released by trees, grasses and weeds, as well as mould spores. When these proteins contact the eyes and nose lining of a sensitive person, the classic hay fever symptoms (itchy watery eyes, blocked or stuffy nose and sneezing) appear rapidly.
The best way to reduce symptoms of hay fever is to avoid direct contact with pollens or spores as much as possible. This means staying away from long grass and other obvious sources of pollen, keeping the windows shut in the home and car, and wearing sunglasses However, even in the middle of London it is impossible to avoid pollens altogether, so sufferers usually still need some kind of treatment.
Conventional treatment for hay fever: is mainly symptomatic: Antihistamines tablets ease most of the symptoms, but are not so good at relieving nasal congestion, and may cause fatigue, even drowsiness.
Decongestant nose sprays have an immediate effect to clear a blocked nose, however, if you use a decongestant nose spray for more than 5-7 days, a 'rebound' more severe congestion of your nose may develop. Steroids spray do not have rebound effect, but are available only on prescription; they are good for nose symptoms, not so good for itchy eyes.