Eczema: Controlling the Itch and Keeping the Skin Barrier Intact
Eczema, or atopic dermatitis, is a long-term condition in which the skin's outer barrier does not hold water in or keep irritants out properly, and the immune system underneath over-reacts. The result is dry, itchy, red or darkened, sometimes weeping skin, typically in the creases of the elbows and knees, on the neck, hands and face, coming in flares with better periods between. It runs in families alongside asthma and hay fever. There is no cure, but nearly everyone can be well controlled. The foundation is emollient: a plain moisturiser applied generously several times a day, every day, including on clear skin, in far larger quantities than most people use. Flares are treated with a topical steroid of a strength matched to the body site, used for a short defined course under a doctor's direction; used correctly these are safe, and under-treating a flare causes more harm than the cream does. Scratching is part of the disease and breaking the itch-scratch cycle is a treatment goal in itself. Skin that becomes weepy, crusted, painful or feverish is infected and needs seeing; a fast-spreading crop of painful blisters in someone with eczema is a medical emergency.
Health writers · Aslam Clinic
What eczema is
The outer layer of skin works like a brick wall: cells are the bricks and a mixture of fats and proteins is the mortar. In eczema that mortar is faulty, often for inherited reasons involving a protein called filaggrin. Water escapes through the gaps, so the skin is dry; irritants, allergens and get in through the same gaps, and the immune system beneath responds with . That gives the itch, redness and swelling.
Then the itch does its own damage. Scratching breaks the barrier further, which lets more in, which produces more inflammation, which itches more. This itch-scratch cycle is why eczema persists long after the original trigger has gone, and why anything that reduces scratching — even cutting nails short — is genuine treatment rather than an afterthought.
Eczema usually begins in the first year or two of life and travels in families with and hay fever. In babies it favours the cheeks and the outer surfaces of the limbs; in older children and adults it moves to the creases of the elbows and knees, the neck, the eyelids and the hands. On brown skin it often looks grey, purple, or darker brown rather than red, and it can appear as small bumps around the hair follicles — which is why eczema on darker skin is regularly under-recognised and under-treated.
Emollients: the part everyone under-does
An emollient is a plain moisturiser with no active drug in it. It replaces the missing mortar in the barrier, and it is the only part of eczema treatment used every single day, flare or no flare. Trials consistently show that regular emollient use reduces flares and reduces the amount of steroid cream needed over a year, which is the cleanest way to limit any from the steroid at all.
- Use far more than feels reasonable. An adult with widespread eczema will get through something in the range of 250 to 500 grams a week. A 100 gram tube lasting a month means it is not being used.
- Apply at least two to three times a day, and always within a few minutes of a bath while the skin is still damp.
- Smooth it downwards in the direction the hair lies, rather than rubbing it in vigorously — rubbing can block follicles and provoke itching.
- Ointments hold water in best, creams are lighter, lotions are the weakest. In Pakistani summer heat a greasy ointment may be unbearable and may cause prickly heat, so a lighter cream by day and an ointment at night is a reasonable compromise.
- Do not use a scented or heavily perfumed moisturiser, and do not use one that stings. Stinging means it is the wrong product, not that it is working.
- Scoop with a clean spoon from a tub rather than dipping fingers in repeatedly, which contaminates it.
Alongside that, replace soap. Ordinary soap, medicated soap, antibacterial handwash, shower gel and bubble bath all strip the barrier. Use a soap substitute or the emollient itself as a wash. Baths should be short and lukewarm, not hot.
Steroid creams: used properly, and the two opposite mistakes
Topical are the standard treatment for a flare. They come in potency classes, from mild to very potent, and the choice depends on the body site, the severity and the age of the person. Two opposite errors are both common here, and the article says both plainly.
| Site | Why it differs | Usual approach |
|---|---|---|
| Face, eyelids, neck | Skin is thin and absorbs far more; thinning shows quickly | Mild potency for short periods, or a non-steroid alternative such as a calcineurin inhibitor |
| Skin folds — armpit, groin, under the breast | Skin is thin and occluded, so absorption is higher | Mild potency, short courses, with fungal infection excluded first |
| Trunk, arms, legs | Ordinary thickness skin | Moderate potency during a flare, stepped down as it settles |
| Palms and soles | Very thick skin absorbs poorly | Potent preparations, often needed for longer |
| Any site, in a baby | Higher surface area relative to body weight | The mildest effective potency, for the shortest effective time, on medical advice |
The first mistake is fear. Many people apply a smear far too thin, stop after two days, and never settle the flare, so the eczema smoulders for months and gets infected. Correctly used topical steroids at appropriate potency for defined courses do not cause the harms people associate with steroid tablets. The quantity guide doctors use is the fingertip unit: the amount squeezed from a standard tube nozzle along the last section of an adult index finger, which covers an area about the size of two adult palms. Ask to be shown how many units your affected area needs.
The second mistake is the opposite, and is easy in Pakistan because potent steroid creams are sold freely. Using a potent preparation on the face, or any preparation continuously for months without review, thins the skin, leaves lasting redness and visible vessels, and produces a rebound flare whenever it is stopped. Combination creams containing a steroid with an antifungal and an antibiotic, widely sold here for anything itchy, are a particularly common cause of this and are rarely the right choice. If you have been using a facial steroid for weeks, stop it with a doctor's help rather than abruptly.
Triggers worth chasing, and ones that are not
Heat and sweat are the dominant trigger in most of Pakistan for much of the year, and prickly heat frequently sits on top of eczema in summer. Cotton clothing, a fan or cooler, showering off sweat promptly and lighter emollients by day all help more than any dietary change. Dust, hard water, wool, detergent residue in clothes, and the dryness of winter with a gas heater running are the other reliable ones.
Food allergy is a genuine trigger in a minority of infants with moderate to severe eczema, usually to cow's milk, egg, wheat, soy or nuts, and usually with other clues such as vomiting, hives or poor growth. It is not the cause of most eczema, and removing foods from a child's diet without medical advice risks poor nutrition while the skin stays exactly as it was. Ask for proper assessment rather than experimenting.
What you can do yourself
- Moisturise generously, at least twice daily, forever — including through good spells.
- Swap soap and shower gel for a soap substitute for everyone in the household who has eczema.
- Keep nails short and filed smooth; cotton mittens at night help infants who scratch in their sleep.
- Cool the skin: a cool damp cloth held on an itchy patch for a few minutes often works better than another cream.
- Wear loose cotton next to the skin, rinse laundry thoroughly, and avoid fabric softener.
- Use a fan or cooler at night in summer; overheating in bed is a common reason a child scratches until dawn.
- Treat a flare early with what your doctor has prescribed rather than waiting to see whether it settles.
- Manage stress and sleep where you can. Both measurably affect flare frequency, and eczema that disturbs sleep feeds back into stress.
What to expect over time
Most children with eczema improve substantially by their teens, and many become clear, though the skin usually stays dry and easily irritated for life and can flare again in adulthood — commonly on the hands, and commonly in jobs involving water, detergents or gloves. Eczema is a condition, not a contagious one: it cannot be caught from another person and is not caused by poor hygiene, and long stretches of are the norm rather than the exception. The for control, as opposed to cure, is good: the great majority of people become comfortable once the emollient habit is established and flares are treated properly and early.
When to see a doctor
Make an appointment if the eczema is not controlled with emollients and the treatment you have been given, if it is disturbing sleep or school or work, if flares are becoming more frequent, if the skin keeps getting infected, or if you have been using a steroid cream on the face or continuously for more than a few weeks. Seek same-day care for weeping, crusted, hot or painful skin with fever, and go to hospital immediately for a rapidly spreading crop of painful blisters. For infants, ask for review if the eczema is severe, if growth or feeding is affected, or if you suspect a food trigger — before removing anything from the diet.
Common questions
Still not sure what to do?
Reading about a symptom only goes so far. A doctor who can ask you questions and examine you will get further in ten minutes than any article can.
