Measles: the rash on darker skin and when to get help

What it is

Measles is a highly infectious viral illness. It starts like a bad cold, with a high temperature, runny or blocked nose, sneezing, cough and red, sore, watery eyes. Small white spots may appear inside the cheeks. A few days later a rash starts on the face and behind the ears, then spreads down the body; the spots can join into blotchy patches and are not usually itchy.

How it works

The virus spreads through coughs, sneezes and the air in a room. A person is infectious from about four days before the rash appears until four days after. It weakens the immune system for weeks, which is why chest infections, ear infections, diarrhoea and eye problems follow it, and why it is dangerous for babies, malnourished children and those with weak immunity.

Why it matters on darker skin

On brown and black skin the measles rash can be much harder to see: it may look darker than the surrounding skin, or show mostly as a rough, bumpy texture. Parents and health workers can miss it. A child with high fever, cough, red eyes and a runny nose who seems very unwell should be checked for measles even if you cannot see a clear rash. After measles the skin can peel and leave darker patches that fade over weeks.

Causes and triggers

Measles is caused by the measles virus. Children who have not had both doses of measles vaccine are most at risk, along with babies too young to be vaccinated, and children who are undernourished, particularly low in vitamin A.

What helps — and why it works

There is no medicine that kills the measles virus, so care supports the child while the body clears it. Give plenty of fluids, keep feeding (including breastfeeding), and use paracetamol or ibuprofen at the right dose for age to ease fever and discomfort. Clean crusty eyes gently with clean cotton wool and boiled, cooled water. Where measles is common, clinics usually give children with measles vitamin A, which reduces eye damage and death: ask for it. Keep the child at home, away from babies and pregnant women, for at least four days after the rash appears. Expected timeline: most children start to recover about a week after the rash appears.

What to avoid and why

Do not rely on herbal remedies, traditional eye drops or applying substances to the eyes or skin: they can cause infection and blindness. Do not send the child to school, church or crèche while infectious. Do not give aspirin to children.

Common mistakes

• Assuming measles must look like a red rash and missing it on darker skin.
• Waiting at home when a child has trouble breathing, cannot drink or is very drowsy.
• Missing the second vaccine dose.

Caring for children's skin

Children's skin is thinner, loses water faster and absorbs more of what is applied to it relative to body size, so simpler is safer. For most children a short lukewarm bath, a fragrance-free soap substitute and a plain emollient are all that is needed, plus shade, clothing and sunscreen from six months of age. Avoid adult products, essential oils, antiseptics in bath water, bleaching or 'toning' creams, and cosmetic treatments such as relaxers and gel nails. Medicines and medicated creams should be used only as a doctor, nurse or pharmacist advises, and in children Melanin & Me does not offer photo checks: a clinician should see the child. Trust your instincts as a parent: a child who is unusually sleepy, floppy, not feeding, breathing fast or has a rash that does not fade when pressed with a glass needs urgent care. Keep a simple record — photos and dates — of rashes that come and go, as this helps the doctor.

Products, medicines and when to worry

When choosing products for children, look for fragrance-free formulas with short ingredient lists, and avoid adult acne, anti-ageing or lightening products, essential oils and talc. Medicated creams — including steroid creams, antifungals and antibiotics — are safe and helpful when prescribed for the right condition and used for the right length of time, but mixed creams sold over the counter can contain strong steroids that are unsafe for children. Sunscreen is suitable from six months of age; younger babies should be kept in the shade and covered. Do not give medicines intended for adults, and ask a pharmacist about the right medicine for a child's age and weight. Seek urgent care for any rash with fever and a very unwell child, a rash that does not fade under a glass, swelling of the face or lips, or blistering of the mouth or eyes.

Questions to ask your doctor or pharmacist

Useful questions include: What do you think is causing this? Is it likely to come back, and how can I prevent it? Which products should I stop? How long before I should expect improvement, and when should I come back if it isn't better? Are there side effects to watch for? Is this treatment safe if I am pregnant, breastfeeding or for my child? Writing your questions down, bringing your products (or photos of their labels) and taking dated photos of the problem make an appointment much more useful.