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European Journal of Dermatology

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sQUIZ your knowledge! Erythematous annular plaques in a patient with diabetes mellitus Volume 29, numéro 6, November-December 2019

Illustrations


  • Figure 1
Auteurs
Department of Dermatology, Beijing Tsinghua Changgung Hospital, Tsinghua University, 168 Litang Rd, Beijing 102218, China

An otherwise healthy 73-year-old man presented with a two-year history of asymptomatic annular lesions in chronically sun-exposed areas. On physical examination, multiple erythematous annular plaques with elevated borders and atrophic hypopigmented centres were present on his nape, upper back, and upper extremities (figure 1A, B). Laboratory tests showed a fasting glucose level of 6.7 mmol/L (121 mg/dL; normal range: 3.6 to 6.1 mmol/L [65 to 110 mg/dL]), a postprandial glucose level of 14.3 mmol/L [...]