Eyes
Itchy eyes
An itchy, watering or gritty sensation in one or both eyes that is most often due to allergy, infection, dryness or eyelid irritation, but which — when joined by pain, reduced vision or marked light sensitivity — can signal a more serious eye problem.
Education and reference only. This explains the common causes of itchy eyes and the warning signs that need urgent help, in plain language — it is not a diagnosis or a substitute for advice from a clinician. If you feel very unwell or are worried, seek medical help.
Quick answer
What is itchy eyes?
Itchy eyes are a common and usually minor complaint. The most frequent cause is allergy, when pollen, dust or pet dander makes both eyes itch, water and redden, often alongside a runny nose and sneezing.
- Get urgent help: Seek urgent eye assessment for an itchy eye with significant pain, reduced vision, or marked sensitivity to light. Seek urgent help for a hot, swollen, painful eyelid with the eye bulging or difficulty moving the eye, which can mean a serious infection.
- Self-care: Simple measures relieve most itchy eyes.
About itchy eyes
Itchy eyes are a common and usually minor complaint. The most frequent cause is allergy, when pollen, dust or pet dander makes both eyes itch, water and redden, often alongside a runny nose and sneezing. Infections such as conjunctivitis cause itchy, red, sticky eyes that may produce a discharge. Dry eye, common with age, screen use and certain environments, leaves the eyes feeling gritty, tired and paradoxically watery, while inflammation of the eyelid margins, called blepharitis, makes the lids sore, crusty and itchy. Contact with irritants or allergens around the eye can also cause an itchy, swollen dermatitis of the eyelids. The vast majority of itchy eyes are harmless and settle with simple care, but itch accompanied by genuine pain, blurred or reduced vision, or sensitivity to light is different and needs an urgent eye assessment.
When to get help
Call 999 or go to A&E if itchy eyes comes with any of these warning signs:
- Seek urgent eye assessment for an itchy eye with significant pain, reduced vision, or marked sensitivity to light.
- Seek urgent help for a hot, swollen, painful eyelid with the eye bulging or difficulty moving the eye, which can mean a serious infection.
- Call 999 if eye symptoms come with swelling of the lips or face and difficulty breathing — this is anaphylaxis.
- Seek urgent help for a red, painful eye after an injury or possible foreign body.
- See a doctor promptly if symptoms are severe, affect your sight, or do not improve with self-care.
When to see a doctor
Most itchy eyes settle within a few days with simple care and a pharmacist's advice. See a doctor or optician if symptoms are severe, keep coming back, or do not improve, or if there is a lot of discharge that suggests an infection needing treatment. You should seek urgent eye assessment, rather than treating yourself, for any itch accompanied by real pain, blurred or reduced vision, or marked light sensitivity, as these can indicate a more serious problem affecting sight. A hot, swollen, bulging eye, or breathing difficulty with facial swelling, are emergencies.
Not sure how urgent it is? It is always OK to call NHS 111 for advice, day or night.
What can cause it
Common causes of itchy eyes
Itchy eyes has many possible causes. Each links to a full, plain-language guide to that condition — what it is, how it's treated and when to seek help.
What helps
Self-care and what you can do
Simple measures relieve most itchy eyes. Try not to rub them, as rubbing worsens the irritation and can spread infection; instead, a cool, clean, damp cloth held over closed eyes is soothing. If allergy is the cause, reduce your exposure to triggers such as pollen, dust and pets, keep windows closed when the pollen count is high, and rinse your face after being outdoors. For dry, gritty eyes, take regular breaks from screens, blink fully and often, and a pharmacist can recommend lubricating eye drops. For crusty, itchy lids, gentle warm-compress and lid-cleaning routines help. Wash your hands often and avoid sharing towels if an infection is likely, and pause contact lens wear until the eyes settle.
Answers
Itchy eyes: frequently asked questions
Why are my eyes itchy and watering?
The commonest reason is allergy to pollen, dust or pets, which makes both eyes itch and water, often with sneezing. Infections, dry eye and inflamed eyelids can also cause itching. If there is pain, reduced vision or light sensitivity, it needs urgent assessment instead.
Is itchy eye conjunctivitis contagious?
Allergic itchy eyes are not contagious, but infectious conjunctivitis can be, especially the viral and bacterial types. Wash your hands often, avoid sharing towels and pillows, and try not to rub or touch the eyes to reduce the chance of spreading it.
How can I relieve itchy eyes at home?
Avoid rubbing, use a cool damp cloth over closed eyes, and reduce exposure to allergens such as pollen and pets. For dry, gritty eyes, take screen breaks and use lubricating drops from a pharmacist. See a doctor if symptoms are severe or do not settle.
When are itchy eyes a sign of something serious?
Itchy eyes are usually harmless, but seek urgent eye care if there is genuine pain, blurred or reduced vision, or strong sensitivity to light. A hot, swollen, bulging eye, or facial swelling with breathing difficulty, are emergencies needing immediate help.
Sources
Where this is drawn from
- NICE CKS: Allergic conjunctivitis.
- RNIB: looking after your eyes.
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