Generalised annular plaques on the trunk

A woman in her 20s presented with a two year history of annular plaques on the neck, shoulders, chest, abdomen, back, and upper limbs (figure). The lesions started as erythematous papules and plaques, then gradually increased in number and slowly extended centrifugally. The woman attended local hospitals several times, and oral antihistamines and topical corticosteroid ointment were prescribed, but the lesions gradually expanded and some coalesced. There was no drug intake before the eruption started. bmj;378/jul20_5/e067430/F1F1f1Well demarcated, erythematous, annular plaques with raised edges consisting of small, firm, skin-coloured or erythematous papules Laboratory tests revealed a fasting glucose level of 7.8 mmol/L (normal range 3.9-5.6 mmol/L), a postprandial glucose level of 16.1 mmol/L (normal value <7.8 mmol/L), and a glycated haemoglobin (HbA1c) of 7.4%. Complete blood count, thyroid hormone levels, and blood-lipid profile were all within normal limits. A skin biopsy taken from the patient’s neck showed a palisading granulomatous infiltrate... Read Original Article: Generalised annular plaques on the trunk »