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Borderline tuberculoid leprosy: type 1 leprosy reaction

Borderline tuberculoid (BT) leprosy: type 1 leprosy reaction This picture shows an annular lesion on the cheek of a young boy with leprosy. There is healing in the centre of the lesion, surrounded by a raised, scaly border. The erythematous appearance of the lesion may be due to a type 1 reaction.