When does hay fever happen?

Tree, grass and weed pollens are released at different times, so the season varies by plant and location. Symptoms may flare after outdoor activity, gardening or open windows, and can continue briefly after pollen has been carried indoors on hair or clothing. Weather, wind and local vegetation can change exposure from day to day.

Sneezing, an itchy nose, clear discharge and watery eyes favour an allergic pattern. [Allergic Rhinitis](/conditions/allergic-rhinitis/) describes this nasal response, while eye-dominant symptoms may fit [Allergic Conjunctivitis](/conditions/allergic-conjunctivitis/).

Notice the months, places and activities linked with symptoms. Keep windows closed when pollen is high, shower after outdoor exposure and wash bedding regularly. If a pharmacist recommends a nasal spray or antihistamine, learn the correct technique and start it according to the product advice; some treatments work better when used consistently.

Plan ahead if symptoms affect sleep, driving, school or exercise. People with asthma should follow their agreed asthma plan because pollen may worsen cough or wheeze.

Seek urgent help for severe breathlessness, rapidly worsening wheeze, faintness or swelling of the mouth or throat. Arrange a review if symptoms occur outside expected exposure, persist despite treatment, or cause repeated sleep disruption. Ongoing facial pain, thick nasal discharge or a cough lasting beyond the allergy episode may suggest [Chronic Sinusitis](/conditions/chronic-sinusitis/) or [Chronic Cough](/conditions/chronic-cough/) and deserves assessment.

Which triggers should I watch for? When should I begin treatment? Could symptoms outside pollen exposure indicate another problem? What is the safest plan for travel, exercise or asthma?