Which of the following is not a tuberculid?
Correct Answer: Lichen nitidus
Description: Lichen nitidus is a rare variant of lichen planus Characterized by the presence of pinpoint to pinhead sized papules which are symptomatic and flesh-colored with a flat shiny surface Tuberculids is a cutaneous hypersensitivity reaction to hematogenous dissemination of Mycobacterium tuberculosis or its antigen in a person with strong anti-tuberculous cell-mediated immunity Tuberculids are grouped as Micropapular -lichen scrofulosorum Papular- papulonecrotic tuberculid Nodular-erythema induratum Ref Harrison 20th edition pg 1211 (Ref: Page 1198 Rook's chapter 37.10) (Ref: Rook's page 779 chapter 27.24 )
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