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(A) Multiple individual, flat-topped, erythematous papules on the external surface of the lower limbs. (B) Well-defined and non-squamous papules on the right thigh. (C) Multiple monomorphic, flat-topped, erythematous papules on the external surface of the upper limb. (D) Monomorphic erythematous papules on the face, with sparing of the trunk. Reprinted/adapted with permission from Ref. [13]. 2019, Leung et al.
