Corticosteroid Use in Urticaria

Introduction to Urticaria Treatment

• The British Journal of Dermatology recommends prednisolone 50 mg daily for 3 days as the guideline-recommended regimen for acute urticaria in adults 1, 2, 3, 4, 5
• Lower doses are frequently effective and should be considered to minimize corticosteroid exposure 1, 2, 3
• Oral corticosteroids may shorten the duration of acute urticaria but should be reserved for cases not adequately controlled with antihistamines 1, 2, 3

Acute Urticaria Management

• For severe acute urticaria, prednisone 0.5-1 mg/kg/day until hives resolve is recommended 6
• Short courses of 3-10 days are appropriate for severe acute exacerbations 7
• The British Journal of Dermatology suggests that oral prednisolone is preferred for most cases 1, 2, 3

Chronic Urticaria Considerations

• Long-term oral corticosteroids should NOT be used in chronic urticaria except in very selected cases under regular specialist supervision (Strength of recommendation A) 1, 2, 3, 4, 5, 8
• This is a firm contraindication due to cumulative toxicity and poor risk-benefit ratio 7

Treatment Algorithm

• Second-generation non-sedating H1 antihistamines are first-line therapy 6, 9, 7
• Increase dose up to 4 times standard if inadequate response 6, 9, 7
• Add prednisolone 50 mg daily for 3 days for acute urticaria not responding to antihistamines 1, 2, 3

Special Populations

• Avoid corticosteroids if possible, especially in first trimester of pregnancy 10, 4, 11
• If necessary, use lowest effective dose for shortest duration 10, 4, 11
• Consider alternative antihistamines with appropriate dose adjustments for patients with renal or hepatic impairment 2, 10, 11, 9

Common Pitfalls to Avoid

• The most critical error is using chronic corticosteroids for chronic spontaneous urticaria 1, 2, 3, 4, 5, 8
• Instead, escalate to omalizumab or cyclosporine for antihistamine-refractory chronic urticaria 9, 7
• Cyclosporine 4 mg/kg daily for up to 2 months is effective in two-thirds of severe autoimmune urticaria cases unresponsive to antihistamines 1, 3, 8