The duration of the pollen season varies from year to year and from country to country, and is likely to change in the future due to the influence of climate change. Depending upon where you live and what you are allergic to, the pollen season may start as early as the end of February and last until the beginning of September.
Allergy symptoms appearing in early spring can be attributed to hazel pollen or alder tree pollen, as they bloom at that particular time. Birch pollen, elm tree pollen and oak tree pollen are the major irritants during late spring. Grass, which is the most common cause of hay fever in Europe, is the primary cause of allergy during midsummer. At the end of summer, mug wort pollen can provoke allergy symptoms. Spores from fern, mushrooms and moss are also capable of provoking allergies (including contact dermatitis) or asthma.
Different types of allergens occur at different times of the year. The peak periods have been highlighted below:
If you get any side effects or have a device failure, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in the package leaflet. Please report side effects or device failures with any medicine or vaccine to the medicines regulator MHRA through the Yellow Card Scheme.
It is easiest and quickest to report side effects and device failures online via the Yellow Card website: https://yellowcard.mhra.gov.uk/ or search for MHRA Yellow Card in the Google Play or Apple App Store.
Alternatively, prepaid Yellow Cards for reporting are available by writing to FREEPOST YELLOW CARD (no other address details necessary), by emailing firstname.lastname@example.org, by telephoning the Commission on Human Medicines (CHM) free phone line: 0800-731-6789, or by downloading and printing a form from the Yellow Card section of the MHRA website. You can also report side effects and device failures direct to the marketing authorisation holder at email@example.com.
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