What is the recommended management for an acute atopic dermatitis flare?

Management of Acute Atopic Dermatitis Flare

For an acute atopic dermatitis flare, immediately initiate topical corticosteroids applied once or twice daily until lesions significantly improve, combined with liberal emollient use and lukewarm bathing with soap-free cleansers. 1

First-Line Acute Flare Management

Topical Corticosteroids (Primary Treatment)

• Apply topical corticosteroids once or twice daily as the cornerstone treatment for acute flares 1
• Select potency based on anatomical location:
  • Low to medium potency (fluticasone, mometasone) for face, neck, and skin folds to avoid skin atrophy 1
  • Medium to high potency for trunk and extremities in adults 1
  • Lower potency formulations for infants and young children due to increased risk of adrenal suppression 1
• Continue until lesions are significantly improved, then consider transitioning to maintenance therapy 1

Emollients and Skin Hydration

• Apply emollients liberally and frequently, preferably immediately after a 10-15 minute lukewarm bath 1
• Use soap-free cleansers or dispersible cream as soap substitute 1
• Emollients provide short- and long-term steroid-sparing effects 1

Second-Line Treatments for Inadequate Response

Topical Calcineurin Inhibitors

• Use pimecrolimus 1% cream or tacrolimus 0.03%/0.1% ointment for sensitive areas (face, neck, skin folds) where potent corticosteroids pose risks 1
• Can be used in conjunction with topical corticosteroids as first-line treatment 2
• Appropriate for patients aged 2 years and above 1

Wet-Wrap Therapy

• Apply wet-wrap therapy with topical corticosteroids for moderate to very severe flares failing conventional topical therapy 1
• Recommended duration: 3-7 days, with possible extension to maximum 14 days in severe cases 1
• Promotes trans-epidermal penetration of corticosteroids and provides barrier against scratching 1

Adjunctive Measures During Flares

Infection Management

• Treat overt secondary bacterial infection with flucloxacillin as Staphylococcus aureus is the most common pathogen 1
• Use erythromycin for penicillin allergy or flucloxacillin resistance 1
• For eczema herpeticum, initiate oral acyclovir early; use intravenous acyclovir in febrile, ill patients 1

Antihistamines

• Sedating antihistamines may be used short-term as adjuvant therapy during severe pruritus flares, primarily for their sedative properties at night 1
• Non-sedating antihistamines have little value in atopic dermatitis 1
• Avoid daytime use; large doses may be required in children 1

Trigger Avoidance

• Avoid soaps and detergents that remove natural skin lipids 1
• Avoid extremes of temperature 1
• Keep nails short to minimize excoriation 1
• Avoid irritant clothing such as wool next to skin; recommend cotton clothing 1

When to Escalate Treatment

Consider Systemic Therapy if:

• Inadequate response to optimized topical therapy including wet-wrap therapy 1
• Moderate to severe disease with significant psychosocial impact 1
• Chronic relapsing course despite appropriate topical management 1

Systemic Options (Specialist-Initiated):

• Cyclosporine 3-5 mg/kg/day for rapid control, limited to 1 year use 1
• Dupilumab or tralokinumab (biologics) for moderate-certainty evidence of efficacy with favorable long-term safety 1
• JAK inhibitors (abrocitinib, upadacitinib, baricitinib) provide rapid itch relief but carry black-box warnings 3
• Short-term systemic corticosteroids only for severe flares when all other options exhausted 1

Common Pitfalls to Avoid

• Do not undertreat due to corticosteroid phobia - use appropriate potency for adequate duration 1
• Do not apply treatments more than twice daily - once or twice daily application is sufficient 1
• Do not use high-potency corticosteroids on face, neck, or skin folds for extended periods due to atrophy risk 1
• Do not routinely prescribe oral antihistamines expecting pruritus reduction - evidence does not support this 2
• Do not delay acyclovir in suspected eczema herpeticum - early treatment is critical 1