Eyes
Sensitivity to light
Discomfort or pain in the eyes when exposed to light — most often part of a migraine or an eye-surface problem, but, when it appears suddenly with a severe headache, a stiff neck and a non-fading rash, a possible warning of meningitis that demands emergency care.
Education and reference only. This explains the common causes of sensitivity to light 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 sensitivity to light?
Sensitivity to light, or photophobia, is the experience of light feeling uncomfortable or even painful to the eyes, making you want to squint or shut them. It very commonly accompanies migraine, where bright light worsens the headache and sufferers seek out dark, quiet rooms.
- Get urgent help: Call 999 or go to A&E for light sensitivity with a severe headache, a stiff neck, a high fever and a rash that does not fade when pressed under a glass — this can be meningitis. Seek same-day eye assessment for light sensitivity with a painful red eye and blurred or reduced vision.
- Self-care: When light sensitivity is part of a familiar migraine or a minor eye-surface problem that a clinician has already assessed, resting in a dark, quiet room and wearing sunglasses outdoors or tinted protection can ease the discomfort.
About sensitivity to light
Sensitivity to light, or photophobia, is the experience of light feeling uncomfortable or even painful to the eyes, making you want to squint or shut them. It very commonly accompanies migraine, where bright light worsens the headache and sufferers seek out dark, quiet rooms. Problems on the surface of the eye — such as inflammation of the coloured part of the eye, dryness or conjunctivitis — can also make the eyes sore in light. The most important reason to take new light sensitivity seriously is its association with meningitis: when it appears alongside a severe headache, a stiff neck, a high fever and a rash that does not fade when pressed under a glass, this is a medical emergency. Light sensitivity with a painful red eye and blurred vision is another warning that needs prompt eye assessment, as conditions inside the eye can threaten sight if not treated quickly.
When to get help
Call 999 or go to A&E if sensitivity to light comes with any of these warning signs:
- Call 999 or go to A&E for light sensitivity with a severe headache, a stiff neck, a high fever and a rash that does not fade when pressed under a glass — this can be meningitis.
- Seek same-day eye assessment for light sensitivity with a painful red eye and blurred or reduced vision.
- Seek urgent help for new light sensitivity with confusion, drowsiness or a fit.
- Seek urgent help for sudden light sensitivity after an eye injury or chemical splash.
- Seek urgent help if a baby or young child becomes very unwell with fever, dislikes light, is floppy or drowsy, or develops a non-fading rash.
When to see a doctor
Treat light sensitivity with a severe headache, stiff neck, fever and a non-fading rash as an emergency and call 999, as this can be meningitis — and act fast for a very unwell child. Seek same-day eye assessment for light sensitivity with a painful red eye or any change in vision. For light sensitivity that is a familiar part of your migraines, or a mild discomfort from a dry or irritated eye surface, self-care helps, but book a routine appointment if it is new, persistent or interfering with daily life.
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 sensitivity to light
Sensitivity to light 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
When light sensitivity is part of a familiar migraine or a minor eye-surface problem that a clinician has already assessed, resting in a dark, quiet room and wearing sunglasses outdoors or tinted protection can ease the discomfort. Reducing screen brightness, taking regular screen breaks and using lubricating eye drops bought from a pharmacy for a dry, gritty surface all help. Keeping rooms gently rather than harshly lit and avoiding sudden bright glare can make daily life more comfortable during a flare. Treating the underlying trigger — for instance following your migraine plan or managing dry eyes — is the most effective approach. Never ignore new light sensitivity that comes with a severe headache, fever or a painful red eye.
Answers
Sensitivity to light: frequently asked questions
When is light sensitivity a sign of meningitis?
Light sensitivity becomes an emergency when it appears with a severe headache, a stiff neck, a high fever and a rash that does not fade when pressed under a glass. Call 999 straight away, as this can be meningitis.
Why does bright light hurt during a migraine?
Migraine makes the brain and eyes more sensitive to stimulation, so light intensifies the headache. This is why many people with migraine seek out a dark, quiet room until the attack passes.
Can a dry or irritated eye make me sensitive to light?
Yes. A poorly lubricated or inflamed eye surface, as in dry eye or conjunctivitis, can feel gritty and sore and become uncomfortable in bright light. Lubricating drops often help, but a painful red eye with blurred vision needs urgent review.
Should I worry if my child suddenly dislikes the light?
A child who becomes very unwell, develops a fever, dislikes light, is floppy or drowsy, or has a rash that does not fade under a glass needs emergency help. Trust your instincts and seek urgent care if your child seems seriously unwell.
Sources
Where this is drawn from
- NICE CKS: Meningitis - bacterial and meningococcal.
- Meningitis Now: signs and symptoms.
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