Chickenpox: getting your child through it in Luxembourg

Chickenpox is a highly contagious infection caused by the varicella-zoster virus, producing crops of red spots and fluid-filled blisters that itch intensely. It is one of the classic childhood illnesses: most children catch it before the age of ten, and it almost always clears up on its own within about ten days. In Luxembourg, the paediatrician or the general practitioner is the right doctor to confirm the diagnosis, guide you through the illness and spot the rare situations that need closer attention.

Recognising the chickenpox rash

The rash has a fairly distinctive signature. It often starts with a mild fever and a few red spots on the trunk or scalp. Within hours, those spots turn into small blisters filled with clear fluid sitting on a red base — classically described as looking like “dewdrops on a rose petal”. The blisters then cloud over, break and dry into crusts.

The detail that sets chickenpox apart from many other rashes is that the spots come out in successive waves over three to five days. So at any one time the same child has brand-new red spots, full blisters and scabs already forming, all side by side. The rash covers the trunk, face and scalp, and can reach the inside of the mouth or the genital area, which sometimes makes eating or washing uncomfortable. And it itches — often fiercely, which is the hardest part of chickenpox for children and parents alike.

Contagious before the spots appear

Chickenpox spreads through respiratory droplets and through contact with the fluid inside the blisters. Its trick is that a child is contagious one to two days before the first spots appear, while seeming to have nothing more than a slight cold or a bit of tiredness. That is exactly why chickenpox tears through crèches and schools so quickly: by the time the first case is identified, the virus has already been passed around. A child then remains contagious until every lesion has crusted over, usually five to seven days after the rash begins.

The normal course: about ten days

In the vast majority of cases, chickenpox follows a predictable path. The fever stays moderate and lasts two to three days. New crops of spots appear over three to five days, then everything gradually dries out. After about ten days, only scabs remain, and they fall off by themselves without leaving scars — provided the child has not picked them off. After the illness, the virus stays dormant in the body: it is this same virus that can wake up years or decades later as shingles.

Relieving the itching — without mistakes

The real battle with chickenpox is the itching, and above all the scratching, which infects the lesions and leaves scars. A few simple measures genuinely help:

• A short, lukewarm shower once or twice a day with a mild soap; pat the skin dry rather than rubbing.
• Cut fingernails very short and keep them clean; for toddlers, soft mittens or socks over the hands at night limit the damage.
• Dress the child in loose cotton clothes and avoid overheating — warmth makes the itching worse.
• Keep the child resting at home, well hydrated, with soft, lukewarm food if the mouth is affected.

The doctor may prescribe a topical treatment to dry out the lesions, or something for the itching if it keeps the child awake at night. One point calls for real caution: with chickenpox, some common painkillers and fever medicines are not recommended and can encourage complications. Do not give anything for fever or pain on your own initiative without checking with the doctor or pharmacist what is safe in this situation.

When to see a doctor, and which one

For typical chickenpox in an otherwise healthy child, a visit to the paediatrician or GP is enough to confirm the diagnosis and set out the care plan. Some situations, however, warrant prompt medical advice:

• a baby under six months old, or any infant whose general condition worries you;
• a pregnant woman who has never had chickenpox or been vaccinated and has been in contact with a case — she should call her doctor without waiting for symptoms;
• an adult or teenager who has never had chickenpox and develops the illness;
• spots that become red, hot, painful or full of pus, a sign the skin is getting infected;
• a fever that climbs again after a few days of improvement, a marked cough, breathing difficulties, unusual drowsiness or refusal to drink.

People with weakened immune defences, whatever their age, should also contact their doctor as soon as they have been in contact with a case of chickenpox. If someone has severe difficulty breathing or a change in consciousness, call 112.

Chickenpox in adults, and the link with shingles

Caught in adulthood, chickenpox is considerably rougher than in children: higher fever, a more extensive rash and a greater risk of complications, particularly affecting the lungs. An adult who has never had the illness and develops a suggestive rash should see their GP quickly, as antiviral treatment may be considered in the first hours. Shingles, for its part, is not a new infection: it is the reactivation, often decades later, of the virus that stayed dormant after childhood chickenpox.

How it works in Luxembourg

In Luxembourg, paediatricians usually follow babies and young children, while general practitioners look after older children, teenagers and adults; you can consult either directly, without a referral. Consultations and prescribed treatments are covered by the national health fund under the usual health insurance rules, detailed on the CNS website. A chickenpox vaccine exists and can be discussed with the paediatrician depending on your child’s or teenager’s situation. On Doctipro, you can book an appointment directly with a paediatrician or a general practitioner near you.