Educational draft · awaiting clinical reviewUse Rapid for revision, not patient-care decisions. Check current national and local guidance and the BNF or BNFC before acting.
2 min synopsisUK scopeSources checked 27 Aug 2026Clinical review pending
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Eczema herpeticum warning
A sudden painful eruption of monomorphic vesicles or punched-out erosions with fever can represent disseminated herpes simplex in eczema.
Action: Start systemic aciclovir immediately, arrange same-day specialist assessment and seek urgent ophthalmology when skin around the eye is involved.
Synopsis
Recognise age-dependent atopic eczema patterns, assess severity and psychosocial burden, use stepped topical care safely, and detect infection or an alternative diagnosis promptly.
Infants often have cheeks, scalp and extensor involvement; flexural eczema becomes common in older children, while adult disease often affects hands, face, neck and flexures.
Assess clear, mild, moderate or severe disease by signs, itch, sleep and daily impact; visible redness may appear purple, brown or grey in deeply pigmented skin.
Use leave-on emollient every day and as a soap substitute, then add a topical corticosteroid whose potency matches site, age and flare severity.
Key red flags
Painful monomorphic erosions, eye symptoms, fever, rapidly spreading blistering, failure to thrive, erythroderma, recurrent deep infection or safeguarding concern requires urgent assessment.
Herpetic departure
Rapid painful monomorphic vesicles or circular punched-out erosions with fever are not an ordinary flare and require immediate antiviral action.
Investigation priorities
01
Clinical history and whole-skin examinationFirst step
Confirm age-patterned itchy dermatitis and map severity, burden and possible alternatives.
Management branches
Daily controlRepair barrier and treat active sites
Eczema is mild or moderate without infection, systemic illness or diagnostic red flags.
Agree a fragrance-free leave-on emollient and soap substitute used frequently, with separate clean containers or pumps to reduce contamination.
Apply an age- and site-appropriate topical corticosteroid once or twice daily according to its product and written plan until the flare is controlled.
Key medicines
Hydrocortisone 1% creamAdults apply a thin layer once or twice daily to affected skin for no longer than seven days under this product licence; paediatric use follows age-specific guidance.
Betamethasone valerate 0.1% creamApply a thin film to affected skin once or twice daily for up to four weeks, reducing frequency or potency when control is achieved.
National guidance is shown before implementation-dependent detail. Typical adult dose examples remain subject to patient factors, contraindications and the live BNF or specialist protocol. Source check completed 27 Aug 2026; clinical approval remains outstanding.