Korean J Dermatol.
2019 Jan;57(1):32-35.
Urticaria Multiforme with Residual Pigmentation: Two Case Reports
- Affiliations
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- 1Department of Dermatology, Pusan National University School of Medicine, Busan, Korea. hcko@pusan.ac.kr
- 2Department of Dermatology, Pusan National University Yangsan Hospital, Yangsan, Korea.
- 3Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
Abstract
- Urticaria multiforme is a cutaneous condition observed in children. This self-limited condition is characterized by well-circumscribed, annular, and erythematous wheals, which spontaneously disappear within a few days. Patients commonly present with acral edema and show a favorable response to antihistamines. It is frequently misdiagnosed as erythema multiforme or serum sickness-like reaction owing to distinctive annular wheals with an ecchymotic center observed in patients. This condition was previously known as acute annular urticaria. The term urticaria multiforme was introduced in 2007 to highlight this specific variant of urticaria. We describe 2 patients with acral edema and transient annular wheals with dusky red centers, which were diagnosed as urticaria multiforme lesions. To our knowledge, the Korean literature includes only a single case report describing acute annular urticaria. However, the report does not use the term "˜urticaria multiforme' to describe this condition.
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