Dermatology Online Journal

Unknown: Annular lesions on the lower limbs of young female
Paulo Morais MD ¹, Lígia Peralta MD², Sofia Magina MD¹, Herberto Bettencourt MD³, Filomena Azevedo MD⁴
Dermatology Online Journal 16 (7): 16

1. Department of Dermatology and Venereology, Hospital S. João EPE, Porto, Portugal, Faculty of Medicine, University of Porto, Porto, Portugal. paulomoraiscardoso@gmail.com
2. Department of Pediatrics, Hospital Infante D. Pedro, Aveiro, Portugal
3. Department of Pathology, Hospital S. João EPE, Porto, Portugal
4. Department of Dermatology and Venereology, Hospital S. João EPE, Porto, Portugal

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Figure 1A	Figure 1B

Figure 2

An otherwise healthy 16-year-old female patient was observed in our department because of a 4-week history of pruritic, nonblanchable purpuric patches and plaques, symmetrically distributed on both lower limbs. The plaques were 2 to 10 cm in diameter and had an annular configuration with central clearing (Figures 1A and 1B). Additional studies, including blood count with platelet count, basic biochemical profile, erythrocyte sedimentation rate, coagulation studies, and autoimmune screening were normal or negative. A punch biopsy specimen was obtained from a lesion (Figure 2).

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