Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
1
Is any of this happening now?
Call 911
Call emergency services for severe difficulty breathing, blue or grey lips, fainting, confusion, or rapid swelling of the tongue or throat.
These are not typical hay fever symptoms and may indicate a severe asthma attack or another serious allergic reaction.
And for anyone, someone who:
has had a seizure that will not stop, or does not wake up afterwards
Other emergency signs, for anyone
Someone who is struggling to breathe, gasping, choking, or cannot get words out
Someone who has chest pain, tightness or pressure lasting more than a few minutes
Someone who has sudden weakness or drooping on one side of the face or body, slurred speech, or sudden confusion
Someone who is unconscious, or cannot be woken
Someone who is bleeding heavily and it will not stop with firm pressure
Someone who has lips or skin that look pale, blue, grey or blotchy
Someone who you believe has taken an overdose or swallowed something poisonous
2
Is any of this happening?
Be seen today
Seek urgent medical advice for new or worsening wheezing, chest tightness, or shortness of breath, especially if you have asthma and your usual action plan is not controlling the symptoms.
And for anyone, someone who:
has a fever with a stiff neck, a rash that does not fade under pressure, or severe headache
3
Does any of this apply?
Book an appointment
Arrange a routine appointment with a pharmacist or healthcare professional if:
Symptoms affect sleep, school, work, exercise, or daily activities
Pharmacy treatments have not provided enough relief
You are unsure which treatment is suitable
Symptoms occur throughout the year or the trigger is unclear
You have repeated nosebleeds, facial pain, or reduced smell
Hay fever appears to be worsening your asthma
You may need allergy testing or specialist immunotherapy
Every sign above is quoted from the sofidex article on Hay fever. If you are not sure, err upward — it is always reasonable to be checked.