Eczema (atopic dermatitis)

What it is

Atopic eczema is a long-term condition where the skin barrier is weak, so skin becomes dry, itchy and inflamed. It often starts in childhood and may run in families alongside asthma and hay fever.

How it works

In eczema the outer skin layer has fewer of the fats (ceramides) and structural proteins (such as filaggrin) that seal water in. Water escapes, irritants and allergens get in more easily, and the immune system over-reacts, causing itch. Scratching damages the barrier further — the itch–scratch cycle.

Why it matters on darker skin

On darker skin eczema may look dark brown, purple or grey rather than red, so it is often under-recognised. It commonly appears as small bumps around hair follicles, and thickened skin from scratching. Flares often leave dark or light patches afterwards.

Causes and triggers

Inherited barrier weakness, soap and hot water, sweat and heat, harmattan dryness, fragrance, wool and rough fabrics, dust mites, infections, stress, and some foods in a minority of young children.

What helps — and why it works

Moisturise generously, several times a day, especially straight after bathing. Use soap substitutes and short lukewarm baths. A doctor can prescribe anti-inflammatory creams for flares; used correctly, they are safe and prevent damage from scratching. Keep nails short and identify triggers such as heat, sweat, wool and fragrance. Emollient several times a day, especially after bathing: replaces missing fats and reduces water loss, so less itch. Expected timeline: less dryness in days; fewer flares over weeks. Soap substitute and short lukewarm baths: soap strips fats and raises skin pH. Expected timeline: immediate reduction in stinging. Prescribed anti-inflammatory creams for flares: calm the immune reaction so the barrier can heal; used as directed they are safe. Expected timeline: flares settle in 1–2 weeks. Identify personal triggers: avoiding triggers reduces how often flares happen. Expected timeline: noticeable over months.

What to avoid and why

Avoid fragranced soaps, bubble baths, antiseptic washes and hot water. Do not apply shea butter mixed with fragrance, herbal oils or kerosene. Do not use strong steroid or mixed "skin toning" creams without medical advice.

Common mistakes

• Stopping emollients when skin looks better.
• Being afraid to use prescribed steroid creams at all, or overusing strong ones without advice.
• Using 'natural' oils with fragrance or essential oils.
• Thinking eczema is caused by dirt and washing more.

Building a routine that lasts

Most skin problems improve with a short routine used every day rather than many products used occasionally. A practical base is a gentle cleanser, a fragrance-free moisturiser and a broad-spectrum sunscreen in the morning, with one targeted treatment at night. Introduce one new product at a time and give it two weeks before adding another, so that if your skin reacts you know the cause. Patch-test on the inner arm or behind the ear for a few days first. Skin renews itself roughly every four to six weeks, so most treatments need two to three cycles — eight to twelve weeks — before you can judge them fairly. Photographs taken in the same light every four weeks are more reliable than memory. In the Nigerian climate, heat, humidity and harmattan all change what your skin needs: lighter gels in the humid season and richer creams in dry months are both reasonable. If a product stings for more than a few minutes, causes swelling, or leaves new dark patches, stop it. Buy from registered pharmacies or official stockists, and use the Authenticity Check if you are unsure whether a product is genuine.

Reading labels and choosing products

On the label, look first for the active ingredient and whether the product is fragrance-free and non-comedogenic. Ingredients are listed in order of amount, so an active at the end of a long list may be present only in a small quantity. Be wary of products that promise results in days, that list no ingredients, or whose label is a sticker or handwritten. Words such as 'natural', 'herbal', 'organic' and 'dermatologist-inspired' are marketing terms, not safety standards. Hydroquinone, mercury compounds (sometimes listed as calomel or mercurous chloride) and strong steroids such as clobetasol do not belong in an over-the-counter cosmetic. A real NAFDAC registration number should be printed on the pack and should match the product on the official Greenbook register. Price is not proof: counterfeiters copy expensive brands. When in doubt, ask a pharmacist, keep your receipt, and use Melanin & Me's Authenticity Check and barcode scanner as a first screen.

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.