Head lice at daycare, what actually happens now

Most parents in British Columbia grew up under a rule that no longer applies. A child was found to have head lice, the school phoned, and somebody left work to collect them. Nobody came back until the head was completely clear.

That rule has been dropped, and the current guidance from HealthLink BC states it without hedging: children should not be sent home or kept home from school or daycare because of head lice.

Parents are usually surprised by this, and often a little suspicious of it. So here is the reasoning, along with what lice actually are, how they really move between children, and what to do at home.

What head lice actually are

Head lice are small insects, about the size of a sesame seed, greyish-brown, and wingless. They live on the human scalp and feed on blood.

They lay eggs, which are glued firmly to individual hairs close to the scalp where it is warm. Those eggs hatch within about 9 to 10 days. That timing matters for treatment, and it is the reason most chemical products need a second application.

Lice live only on people. Away from a human head they do not survive long, which is why a house-wide cleaning campaign is largely wasted effort.

They do not carry disease. They do not transmit anything from one child to another beyond themselves. The symptom families notice is itching, which is a reaction to the bites, and the only real complication is a skin infection where a child has scratched hard enough to break the skin.

How they actually spread

This is where the popular understanding is furthest from the facts.

Head lice cannot jump. They cannot fly. They have no mechanism for either. What they do is crawl, and crawling requires two heads to be close enough together for a louse to walk from one to the other.

That is why they move so readily among young children. Children in a group setting sit shoulder to shoulder, lean their heads together over a puzzle, and lie near one another at rest time. Adults keep their heads apart from other adults almost all the time, which is a large part of why adults get lice far less often.

Spread through shared objects, a hat, a brush, a pillow, is possible, and HealthLink BC notes it happens rarely. Most cases trace back to direct head-to-head contact.

Why the send-home rule was dropped

Two facts sit behind the change.

The first is timing. By the time an adult spots lice on a child's head, they have usually been there for some weeks. Lice are small, they avoid light, and early numbers are low. So the child who is discovered on a Tuesday afternoon has already been in that room for weeks with the same lice. Sending them home that afternoon does not undo any of it.

The second is cost. Exclusion has real costs, and they land on the child and the family rather than on the lice. A missed day of care, a parent's missed shift, and a child who feels singled out for something that has nothing to do with anything they did.

Weighed against a condition that spreads no disease, health authorities concluded the exclusion was not worth what it cost. The same logic applies to the old "no nit" rule, under which a child could not return until every egg case was gone. Egg cases stay stuck to the hair long after treatment has worked, so that rule kept out plenty of children who had no live lice at all.

Head lice have nothing to do with cleanliness

This deserves saying directly, because the shame attached to lice is out of all proportion to what they are.

How often hair is washed makes no difference. How clean a house is makes no difference. Clean hair is just as good a home for a louse as any other hair. A child with very short hair can get them. A family that does everything right can get them repeatedly in one year, because the child sits next to somebody at circle time.

Families sometimes hesitate to tell a centre for exactly this reason, which is unfortunate, because telling us is the single most useful thing a parent can do. It costs your child nothing in attendance, and it lets us mention to other families in general terms that it would be worth checking heads this week. That check is what actually breaks a cycle. We do not identify your child to anybody.

How to check a head properly

Checking is a slow job done in good light, and it goes much better wet than dry.

Wet the hair and work generous amounts of conditioner through it. Conditioner slows the lice down and makes them far easier to catch. Then work through the hair in small sections with a fine-toothed lice comb, going from the scalp outward. Wipe the comb on a paper towel after each stroke and look at what comes off.

Focus close to the scalp rather than at the ends. That is where lice feed and where eggs are laid, particularly behind the ears and at the back of the neck.

Treating it

HealthLink BC sets out two routes, and either can work.

The first is an over-the-counter product. Shampoos, creams, rinses, and sprays containing an ingredient that kills lice are available at most pharmacies without a prescription. Permethrin and pyrethrins are common examples. Most of these need a repeat application 7 to 10 days later, which is what deals with the eggs that hatch after the first treatment. Skipping the second application is the most common reason a treatment appears to have failed.

The second is wet combing. It is cheaper, uses no chemicals, and works through repetition. Use generous amounts of hair conditioner and a fine-toothed lice comb, every 4 days for at least 2 weeks. It takes more time and more patience than a bottle from the pharmacy, and it suits families who would rather not use a chemical treatment on a young child.

Speak to a pharmacist or your health care provider about which option is safest for your particular child. Age matters here, and a pharmacist can answer that in a two minute conversation without an appointment.

Why some families get them again a few weeks later

A second round shortly after the first is common, and it usually points at one of three things rather than at bad luck.

The most frequent cause is a missed second treatment. Eggs hatch within about 9 to 10 days, and a product that killed the live lice on day one does nothing to eggs that hatch on day six. Skipping the repeat application at 7 to 10 days leaves a new generation to start over. The same logic applies to wet combing, which is why the schedule runs every 4 days for at least 2 weeks rather than once or twice.

The second is an untreated person in the household. Check every head, including adults and older siblings, on the same day. Treating one child while a parent quietly carries them keeps the cycle running indefinitely.

The third is simply renewed contact. Head-to-head contact happens every day among young children, so a child can pick lice up again from an untreated classmate weeks later. That is a new case rather than a failed treatment, and it is one more reason telling the centre helps everybody.

The house

Keep this in proportion. Lice do not survive long off a scalp, so the house is not the problem.

Wash recently used bedding, clothing, hats, and soft items in hot water and dry them on high heat. Clean combs and brushes. That is enough. Stripping the whole house, replacing furniture, or buying special sprays is effort spent on the wrong target.

The time is far better spent on treating heads carefully and checking everyone in the household, because an untreated adult or older sibling will simply pass them back.

How this fits with the centre's other health rules

Head lice sit in a different category from the illnesses that do keep a child home. The BC Centre for Disease Control's guidance for child care settings uses a straightforward test for illness generally: a child stays home when they are sick and unable to take part fully in the usual activities of the day.

A child with head lice is not sick and can take part in everything. That is the difference in one line. Our post on when to keep your child home sick from daycare works through the illnesses where the answer goes the other way.

Licensed centres in British Columbia operate under the Child Care Licensing Regulation, which sets requirements around health, hygiene, and record keeping. Good handwashing routines and clean shared spaces are part of daily practice regardless of whether anybody currently has lice, and they matter far more for the illnesses that do spread disease.

Frequently asked questions

Will my child be sent home from daycare for head lice?

HealthLink BC's guidance is direct on this point: children should not be sent home or kept home from school or daycare because of head lice. The reasoning is that lice do not spread disease and, by the time they are noticed, the child has usually had them for some weeks already. Sending a child home costs them learning time and costs a parent a working day without reducing spread.

What exactly are head lice?

They are small wingless insects, roughly the size of a sesame seed and greyish-brown in colour, that live on the human scalp and feed on blood. Their eggs are attached to hairs close to the scalp and hatch within about 9 to 10 days. They live only on people and cannot survive long away from a human head.

How do head lice spread from one child to another?

Mainly through direct head-to-head contact, which is why they move easily among young children who sit and play close together. Lice cannot jump and cannot fly. They crawl. Spread through shared items such as hats, brushes, or bedding is possible but happens rarely, so most transmission traces back to two heads touching.

Does having head lice mean my home or my child is dirty?

No. Head lice are unrelated to how often hair is washed or how clean a home is. Clean hair offers no protection, and a child with very short hair can still get them. This is one of the reasons the old practice of sending children home was unhelpful, because it attached shame to something that has nothing to do with a family's care.

Can head lice make my child sick?

Head lice do not carry or transmit disease. The main effect is itching, which comes from a reaction to their bites, and scratching hard enough can occasionally break the skin and let in a skin infection. Beyond that they are a nuisance to clear rather than a health risk.

How do I treat head lice?

There are two main routes. Over-the-counter products containing permethrin or pyrethrins are sold at most pharmacies without a prescription, and most of these need a second application 7 to 10 days later to kill lice that have hatched since. The alternative is wet combing, using generous amounts of hair conditioner with a fine-toothed lice comb every 4 days for at least 2 weeks. Speak to a pharmacist or your health care provider about the safest option for your child's age.

How do I check my child's head properly?

Work in good light and go through the hair in small sections, looking close to the scalp rather than at the ends. Wetting the hair and using plenty of conditioner slows the lice down and makes them far easier to catch with a fine-toothed comb. Wipe the comb on a paper towel after each stroke so you can see what has come out.

What should I do about hats, bedding, and the car seat?

Wash recently used bedding, clothing, hats, and soft items in hot water and dry them on high heat, and clean combs and brushes. Deep cleaning the whole house is unnecessary, because lice do not live long away from a scalp. The time is better spent on treating heads properly and checking the household.

Should I tell the centre if my child has head lice?

Please do. It will not cost your child a day of attendance. It lets educators mention it to other families in general terms so they can check their own children, which is what actually breaks the cycle. We will not identify your child to anyone.

Why did the old "no nit" rule get dropped?

Because it kept children out of care and out of school without reducing transmission. Eggs and empty egg cases stay glued to the hair for a long time after successful treatment, so a strict no-nit rule excluded plenty of children who no longer had live lice at all. Health authorities now prioritise attendance alongside treating heads properly at home.

Before you visit

Health policies are a fair thing to ask about before you enrol, and we are happy to walk through ours. If you are comparing centres in Port Coquitlam or Coquitlam, contact us and we will answer whatever you want to know about how we handle illness and day-to-day hygiene.