Pink eye in children: which kind is it, and what to do

It is always the same hour. You go in to wake your child and one eye is glued half shut, rimmed pink, weeping down the cheek onto the pillow. School starts in an hour and you have to decide something before you have even had coffee. Is this the kind that needs a doctor, or the kind that just needs time?

Pink eye, what doctors call conjunctivitis, is one of the most common reasons a child's eye turns red, and most of it is ordinary. But "most" is doing some work in that sentence, and this article is about the part that is not most: the newborn exception, and the short list of signs that tell you this particular red eye needs to be seen today.

My child woke up with a red, sticky eye. What is going on?

The clear surface over the white of the eye, the conjunctiva, has become inflamed, and it is leaking fluid, mucus or pus as a result. That inflammation has three common causes in children: a virus, usually the same family that causes colds; bacteria; or an allergy. A fourth, milder cause is simple irritation, from chlorine after swimming or a speck of dust. None of these are rare or alarming on their own. What matters for your morning decision is telling them apart, because the right response is not the same for all four.

Is this viral, bacterial or allergic pink eye?

Look at the discharge and the pattern, and you will get most of the way there. A watery eye that turned up alongside or just after a cold, in one eye or moving from one eye to the other, is usually viral. It is also the most contagious kind, because it rides along with the same cold that is already going round the family and the classroom.

A thick, sticky discharge, yellow or green, that glues the lashes shut overnight and needs wiping away before the eye will even open, points to bacterial. Itching that is intense, tears in both eyes at once, and puffy lids without much thick discharge point to allergy, and allergic pink eye is not contagious at all.

I will be honest with you about the limits of this. These three overlap. Some bacterial infections produce hardly any discharge. A viral eye can look far worse first thing in the morning, dried and crusted from a night lying still, than it does an hour later. If your child also keeps rubbing at the eye constantly, allergy climbs higher on the list, but rubbing alone does not settle the question either. When it changes what I would do, I look instead of guessing, and that is the position to work from too.

Does my child need antibiotic drops for pink eye?

Only if it is bacterial, and often not even then. Most children with pink eye improve within five to six days without antibiotics. Allergic eyes are the exception: they settle when the allergy is dealt with, not on a countdown. Antibiotic drops do nothing for a virus or an allergy, because neither is caused by bacteria in the first place, so a prescription is only useful once you know which kind you are dealing with. If the discharge is thick, yellow-green, and not settling after a few days, that is a reasonable reason to have it looked at instead of continuing to guess at home.

Is it safe to send my child to school?

There is no single Malaysian rule I can hand you here, because schools and nurseries set their own policies, and some ask for 24 hours of treatment before a child returns. What I can tell you: if the eye is weeping, sticky, or your child is clearly unwell, keep them home while the worst of it passes, both for their comfort and because bacterial and viral conjunctivitis do spread easily between children in close contact. Then check directly with your child's school on what they expect before sending them back, instead of assuming.

Hand washing, your child's and yours, before and after touching the eyes or face, and wiping down anything commonly touched, does more to stop the spread than almost anything else you can do at home.

My baby is only a few weeks old, is this different?

Yes, completely, and this is the one part of this article I want you to remember even if you forget the rest. A red, sticky eye in a baby under thirty days old is not a wait-and-see situation. It needs to be seen the same day. At that age the causes can include infections picked up around birth that move quickly and can threaten the eye itself if left, in a way that simply does not apply to an older child with a cold-related pink eye. The timing of onset even helps identify the cause, which is one reason we want to see a newborn's eye early rather than late. If you are still working out the rhythm of your baby's early eye checks in general, this is the one exception that jumps the queue.

What are the red flags that mean this is not simple pink eye?

Six things move a red eye out of the pharmacy-and-patience category and into mine: real pain, not just irritation; sensitivity to light that is more than a normal red eye would cause; any change in vision, blur, double vision, anything different from usual; blisters or a rash on the eyelid or around the eye; an eye that is intensely, angrily red rather than ordinarily pink; and symptoms that are getting worse day on day instead of better. Any one of these on its own is enough reason to book an appointment instead of waiting.

A word on hand, foot and mouth disease, since I am asked this often in Malaysia where it circulates through nurseries: direct eye involvement from that illness is described in the medical literature only as rare individual case reports, not as something that happens routinely. I would not assume a red eye in a child with hand, foot and mouth is simply pink eye riding along with it. Because both spread the same way, by hands touching the face, a child with hand, foot and mouth who then develops a red or painful eye is worth having examined properly, not simply assumed.

It is also useful to know what pink eye is not. A single painful lump on the lid margin is more likely a stye than conjunctivitis, and a watery eye in a much younger baby that never really clears, without much redness, is often a blocked tear duct rather than an infection at all. Getting the label right changes what helps.

What helps at home while it settles?

Clean, cooled boiled water on a fresh cotton pad, wiped gently from the inner corner outward, using a clean part of the cloth for each wipe, is the simplest and most useful thing you can do for a sticky morning eye. A cool, damp flannel held against closed eyes for a few minutes eases the discomfort of both viral and allergic types. Avoid contact lenses and eye makeup until it has cleared. There is no home remedy that shortens a viral case, and that is fine: most children are simply uncomfortable for a matter of days, not weeks, and then it is over.

What I want you to leave this article with is not a diagnosis you can make with total confidence at 7am, because even I sometimes need a closer look to be certain. It is a short, memorable list: pain, light sensitivity, vision change, blisters, intense redness, symptoms getting worse, or a baby under a month old. Everything else is very likely to be one of three ordinary things, and ordinary things get better on their own.

One more thing, because parents rarely ask it out loud: a red, weepy eye is not a sign you missed something or did anything wrong. Children pick up conjunctivitis constantly, at nursery, at the playground, from a sibling's cold, simply because young hands go to young faces all day long. Treat the eye, wash your hands, and give it the week it needs.

Common questions

References

1. American Academy of Ophthalmology · Pink eye (conjunctivitis) · www.aao.org
2. AAP HealthyChildren · Pinkeye (conjunctivitis) in children · www.healthychildren.org
3. NHS · Conjunctivitis · www.nhs.uk
4. AAO EyeWiki · Neonatal conjunctivitis · eyewiki.aao.org
5. AAP HealthyChildren · Do I need to keep my child home if they have pinkeye? · www.healthychildren.org

Reviewed by Dr Chan Li Yen on 27 July 2026. Next review July 2027. This article is general information and does not replace an examination.