When a child’s eczema needs a doctor

Most of the time, a child’s eczema is a home job: moisturizer, short lukewarm baths, cotton clothes, short nails, patience. But sometimes patience is the wrong call, and parents often can’t tell which moment they’re in. This is the article to bookmark for 10 p.m., when the skin looks different and you’re wondering whether to wait until morning. Here are the signs that mean “book an appointment”, the ones that mean “today”, and what a doctor can offer.

Why infection is the first thing to rule out

Eczema skin has a weak barrier and, often, cracks from scratching. The American Academy of Dermatology puts it simply: eczema makes the skin less effective at keeping germs out, so bacteria, viruses and other microbes get in more easily. A review in the Canadian Medical Association Journal notes that staph bacteria commonly colonize eczema skin, which is why an ordinary flare can tip into an infection with little warning.

That’s why doctors want to see an eczema that has changed character rather than just gotten worse. Infection doesn’t respond to moisturizer or the usual flare cream, and treating it clears the way for everything else.

Signs of a bacterial infection

The American Academy of Dermatology lists these as the signs to watch for on a child’s skin:

• Yellowish-orange or honey-coloured crusts, often sitting on top of eczema patches.
• Pus-filled spots or blisters, especially on top of eczema.
• Red, swollen bumps.
• Redness or red streaks spreading outward from a patch.
• Skin that’s painful, swollen or warm to the touch (the NHS names these too).
• Eczema treatment that suddenly stops working.

Any of these is a reason to contact your doctor promptly, even if your child seems otherwise well. If there’s a fever or your child seems unwell or flu-like alongside these signs, get medical care the same day. Bacterial infections usually need a prescribed treatment; the CMAJ review notes that routine antibiotics aren’t recommended for eczema that isn’t infected, so it’s the signs above, not the eczema itself, that decide.

Eczema herpeticum: the one that can’t wait

This is rare, and every parent of a child with eczema should know its name. Eczema herpeticum is an infection with the herpes simplex virus (the cold sore virus) that spreads across eczema-affected skin. DermNet describes it as a widespread viral infection marked by fever and clusters of itchy blisters or “punched-out” sores, most commonly seen in infants and children with atopic dermatitis. Signs appear 5 to 12 days after contact with someone who has the virus, as ordinary as a kiss from a relative with a cold sore.

What to look for:

• Clusters of small blisters that all look alike, sometimes blood-stained, with a dimple in the centre, often on the face, neck or upper body.
• Older blisters that crust over and become small, round, punched-out sores.
• A child who’s feverish, unwell or in pain, with skin that’s more painful than itchy.
• The American Academy of Dermatology adds: sores that look like cold sores or fever blisters, and small crusted bumps with pain and fever.

DermNet calls eczema herpeticum one of the few true dermatological emergencies, because severe cases can involve the eyes, brain, lungs and liver. It’s treated with antiviral medicine, and prompt treatment usually avoids a hospital stay. If you see this pattern, go to a doctor or the emergency department the same day. Don’t apply the usual flare cream and wait; anything near the eyes needs particular urgency.

Lost sleep is a medical problem, not a phase

Parents tend to normalize broken nights. In the Eczema Society of Canada’s 2021 survey, 76% of children with moderate or severe eczema were woken from sleep by itch, 74% had trouble falling asleep and 67% had trouble staying asleep. Those numbers describe eczema that isn’t under control, and lost sleep affects mood, behaviour, attention at school and family life, as the same survey documents.

If itch is waking your child more than occasionally, or you’re in the pattern of a night-time scratching session most nights, that’s a reason to book an appointment on its own, without waiting for the skin to look dramatic. The same goes for a child who’s miserable, withdrawn or persistently upset about their skin.

Not improving after two weeks of proper care

Home care works for a lot of eczema, but it has limits. If you’ve done two weeks of daily moisturizing, short lukewarm baths, fragrance-free products and reasonable trigger-spotting, and the skin is still red, rough and itchy, you’ve collected all the information home care can give you. The NHS advises seeing a GP if you think your child has eczema that isn’t improving with treatment, and for a first episode, to confirm that it is eczema at all, since some other rashes look similar in babies.

Other reasons to book, even without infection:

• The rash is spreading, or covers a large part of the body.
• It’s on the face, eyelids or hands in a way that limits eating, playing, writing or sleeping.
• Flares are coming back quickly as soon as you stop treatment.
• Your child needs a prescription cream more and more often, or it seems to have stopped working.
• You’ve been managing this for months and nobody has ever confirmed the diagnosis or written down a plan.

What a doctor can offer

Parents underestimate this. If the only tools you know are moisturizer and one tube of cream, it can feel as though there’s nothing more to be done. There is. The Eczema Society of Canada’s overview of treatments includes:

• Topical corticosteroids, the anti-inflammatory creams and ointments that calm flares and quickly reduce itch. They come in strengths from mild to very potent, and the CMAJ review notes that the lowest effective strength should be used and that once-daily application is almost as effective as twice-daily. Used as prescribed, they’re the workhorse of eczema care.
• Non-steroid prescription creams, including calcineurin inhibitors and newer classes, useful for delicate areas like the face and eyelids and for keeping eczema quiet between flares.
• Antibiotics or antivirals when the skin is infected.
• Wet wraps and specialised dressings for severe flares.
• Phototherapy, controlled ultraviolet light treatment, for older children whose eczema doesn’t respond to creams.
• Systemic treatments, including injectable biologic medicines and newer oral medicines, for moderate to severe eczema that hasn’t responded to everything above. These are specialist treatments, and they’ve changed what “severe” eczema means for many families.

Your family doctor or paediatrician handles the first steps: diagnosis, treating infection, a flare cream and a written plan. A pharmacist can show you how much to apply and how often. If eczema stays severe, keeps getting infected or isn’t responding, ask for a referral to a dermatologist, who can offer the specialised options.

What to bring to the appointment

A few things make the visit far more useful:

• Photos of the skin at its worst, since eczema loves to calm down on appointment day.
• The names of every product you’ve been using, including moisturizers, cleansers and laundry detergent, and any creams already tried.
• Notes on sleep: how many nights a week your child wakes, and for how long.
• Your trigger diary, if you keep one.
• Your questions, written down, including “what should I do if this happens again?”

The line between home care and a doctor’s care is clearer than it feels at 10 p.m. Honey-coloured crusts, pus, spreading redness, or a feverish child with clusters of small blisters mean today. Broken nights, a spreading rash, or two weeks of proper care with no improvement mean this week. And whatever you’re seeing, a doctor has more to offer than you probably think.