Eczema creams have different jobs: moisturisers, steroids and alternatives
Moisturisers, topical corticosteroids and topical calcineurin inhibitors have different roles. HealthHub advises applying a moisturiser that is free of fragrances and colouring at least two times a day and within five minutes after bathing. Regular moisturising keeps skin moist, reduces signs and symptoms of eczema and reduces how often flare-ups occur. Topical steroids are started when a flare causes itching and redness and are stopped when the flare clears. NICE recommends tacrolimus and pimecrolimus only as second-line treatments, not for mild atopic eczema or as first-line treatments. Diagnosis, body site, age, severity, formulation and planned duration then decide which option fits.
Key takeaways
- Apply moisturisers at least twice daily and within five minutes after bathing, using fragrance- and colouring-free products.
- HealthHub’s guidance is that topical steroids go on thinly, only on affected skin, and the printed percentage does not rank different ingredients.
- Tacrolimus is second line for moderate to severe atopic eczema in adults and children aged 2 years and older. Pimecrolimus is second line for moderate face and neck eczema in children aged 2 to 16 years. Both need eczema not controlled by topical corticosteroids and a serious risk of important adverse effects from further topical corticosteroid use, particularly irreversible skin atrophy.
What job does a moisturiser do?
HealthHub reports that 20% of school children in Singapore have eczema and 30 to 40% may still have eczema symptoms as adults. Its eczema guidance says to apply a moisturiser at least two times a day, ideally within five minutes after bathing or showering, and to choose products without fragrances or colouring.
Pick a product you can use consistently. HealthHub says lotions have a higher water content and may be easier to apply than creams, but their moisturising effect is less than creams and ointments. Do not mix a prescribed anti-inflammatory medicine into a moisturiser. If both are prescribed, follow the product or clinician’s instructions on order and spacing; HealthHub says for tacrolimus apply moisturiser 2 hours after the medication, and for pimecrolimus apply the moisturiser after the medication.
Why does topical-steroid potency matter more than the word “steroid”?
Topical corticosteroids relieve swelling, redness, inflammation, itch and allergic reactions. HealthHub’s topical-steroid guide says steroid creams and ointments should only be applied directly to the affected areas of the skin, in a thin layer, according to the label instructions, and stopped when there are no more symptoms. Applying too much increases the risk of side effects; using too little may reduce the medication’s effectiveness. Do not bandage or cover the area after applying the medicine unless a doctor directs it. An occlusive dressing can increase steroid absorption through the skin and raise the risk of side effects.
Do not compare topical steroids by printed percentage. HealthHub’s topical-steroid guide says topical steroids differ in effectiveness, and stronger steroids should be avoided on parts of the body where the skin is thinner or more delicate, such as the face. If more than one topical steroid is used, follow the instructions on the medication labels; they state which part of the body each product can be used on. A tube prescribed for one body site should not be moved to another site without checking the label.
| Treatment role | Main question | Common comparison error |
|---|---|---|
| Moisturiser/emollient | Is the barrier product tolerated and practical for regular use? | Expecting it to suppress every inflamed flare alone |
| Topical corticosteroid | Is the potency, site, formulation and intended duration appropriate? | Ranking different steroids by percentage only |
| Tacrolimus ointment | Is a steroid-sparing anti-inflammatory appropriate for this site and severity? | Treating it as a moisturiser or stronger steroid |
| Pimecrolimus cream | Does its licensed and clinician-selected role fit the patient? | Assuming tacrolimus and pimecrolimus are interchangeable |
When are tacrolimus or pimecrolimus discussed?
Tacrolimus and pimecrolimus reduce skin inflammation without being corticosteroids. NICE recommends topical tacrolimus as a second-line option for moderate to severe atopic eczema in adults and children aged 2 years and older. NICE recommends pimecrolimus as a second-line option for moderate atopic eczema on the face and neck in children aged 2 to 16 years. Both recommendations require eczema that has not been controlled by topical corticosteroids and a serious risk of important adverse effects from further topical corticosteroid use, particularly irreversible skin atrophy. NICE defines uncontrolled by topical corticosteroids as disease that has not shown a satisfactory clinical response to adequate use of the maximum strength and potency appropriate for the patient’s age and the area being treated.
The NICE roles differ by age and site, so tacrolimus and pimecrolimus are not interchangeable. Tacrolimus covers moderate to severe atopic eczema in adults and children aged 2 years and older. Pimecrolimus covers moderate atopic eczema on the face and neck in children aged 2 to 16 years. HealthHub lists warm sensation, sometimes burning, stinging or itching at the application site as the most common side effects, usually during the first few days of treatment. Separate HealthHub pages for topical tacrolimus and pimecrolimus describe precautions around suspected skin infection, ultraviolet light exposure and avoiding long-term continuous use.
The topical tacrolimus and pimecrolimus pages say not to cover treated skin with bandages, dressings or wraps. Both pages also say to avoid continuous long-term use and to inform a healthcare professional if you suspect an infection on your skin, such as chickenpox or herpes.
Why can the wrong diagnosis make a cream look ineffective?
Fungal infection, contact dermatitis, psoriasis, scabies and other conditions can resemble eczema. A steroid may temporarily reduce redness while allowing an infection to spread or changing its appearance. When presumed atopic dermatitis in an adult has not responded to optimised treatment, the American Academy of Dermatology supports diagnostic reassessment with patch testing, skin biopsy or skin scraping to identify conditions that mimic or coexist with atopic dermatitis. The steroid-creams and fungal-rashes guide explains why hidden steroid-antifungal combinations are difficult to self-compare.
NICE lists weeping, pustules, crusts, no response to treatment, rapidly worsening eczema, fever and malaise as possible signs of secondary bacterial infection of eczema. It also cautions that not all eczema flares are bacterial, even when weeping and crusts are present, and that eczema can be colonised with bacteria without being clinically infected. Treat underlying eczema with emollients and topical corticosteroids whether antibiotics are offered or not. In people who are not systemically unwell, NICE recommends not routinely offering a topical or oral antibiotic because antibiotics in addition to topical corticosteroids have limited benefit compared with topical corticosteroids alone and repeated courses raise antimicrobial resistance risk. Reassess if the person becomes systemically unwell, has pain out of proportion to the infection, symptoms worsen rapidly or significantly at any time, or symptoms have not improved after completing a course of antibiotics.
What changes the answer?
- Body site. HealthHub says stronger topical steroids should be avoided on thinner or more delicate skin such as the face.
- Age and surface area. Children have a different surface-area-to-body-size relationship. Pimecrolimus is recommended for children aged 2 to 16 only on the face and neck, and tacrolimus for children aged 2 and older.
- Severity and frequency. HealthHub says eczema not better in 1 to 2 weeks after self-treatment or worsening should be reviewed. NICE reassesses after a completed antibiotic course when symptoms have not improved.
- Infection or a mimic. NICE lists weeping, pustules, crusts, no response to treatment, rapidly worsening eczema, fever and malaise as possible signs of secondary bacterial infection, and eczema herpeticum should be considered.
- Pregnancy or breastfeeding. HealthHub says to inform a healthcare professional if you are pregnant, planning to become pregnant, or breastfeeding.
- Previous response and adverse effects. HealthHub warns that using too much topical steroid incorrectly for a long period can cause skin thinning, reddish stretch marks and acne.
When should eczema be medically reviewed?
See a doctor if eczema has not improved in 1 to 2 weeks after self-treatment or gets worse. HealthHub lists fluid oozing, yellow crust or yellowish spots, swelling or soreness, and fever or shivering as signs of infection. Also arrange a review when flare-ups disturb sleep, mood or lifestyle. NICE recommends reassessment if the person becomes systemically unwell, has pain out of proportion to the infection, symptoms worsen rapidly or significantly at any time, or symptoms have not improved after completing a course of antibiotics. During reassessment, consider other possible diagnoses such as eczema herpeticum and signs of more serious illness such as cellulitis, necrotising fasciitis or sepsis.
Bring the actual tubes to the pharmacist or clinician rather than relying on colour or packaging. Note which body area each product was prescribed for and when it was opened. The eczema condition page, atopic dermatitis page and skin-care category can help organise the terminology before the products are checked.
Sources
- Singapore HealthHub: Eczema.
- Singapore HealthHub: Topical Steroids.
- Singapore HealthHub: Tacrolimus (topical).
- Singapore HealthHub: Pimecrolimus.
- American Academy of Dermatology: Atopic dermatitis clinical guideline.
- NICE: Tacrolimus and pimecrolimus for atopic eczema.
- NICE: Secondary bacterial infection of eczema and other common skin conditions: antimicrobial prescribing.
