Hay fever

Also called Seasonal allergic rhinitis or Pollen allergy

Hay fever is an allergy to pollen from trees, grass or weeds. It causes sneezing, a runny or blocked nose and itchy, watery eyes. It is usually worse from late March to September, especially on warm, humid and windy days when the pollen count is high.

Last updated Nov 9, 2026

What it is

There is no cure, but antihistamines, steroid nasal sprays and eye drops can ease symptoms. Keeping windows closed and showering after being outside can help.

For severe hay fever, immunotherapy may be offered by a specialist.

Common signs

  • Sneezing
  • Runny or blocked nose
  • Itchy, red or watery eyes
  • Itchy throat, mouth, nose or ears
  • Tiredness
  • Worse asthma symptoms

How it is usually diagnosed

  • Questions about symptoms and when they happen
  • Skin prick or blood tests, sometimes

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • Allergy test results
  • Medicines that have worked
  • Notes on which months are worst

Questions to ask your doctor

  • Which medicine should I try first?
  • Could I benefit from immunotherapy?
  • How can I keep my asthma under control in pollen season?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • Wheezing or breathlessness that does not improve with your inhaler: call 112

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

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