Lichen scrofulosorum (also known as "Tuberculosis cutis lichenoides") is a rare tuberculid that presents as a lichenoid eruption of minute papules in children and adolescents with tuberculosis. The lesions are usually asymptomatic, closely grouped, skin-colored to reddish-brown papules, often perifollicular and are mainly found on the abdomen, chest, back, and proximal parts of the limbs. The eruption is usually associated with a strongly positive tuberculin reaction. Of the three tuberculids, the incidence of lichen scrofulosorum was found to be the lowest (2%) in a large study conducted in Hong Kong. This highlights its rarity and significance as an important marker of undetected tuberculosis.
See also 
- ^ In: Burns T, Breatnach S, Cox N, Griffiths C, editors. (2004). Rook's textbook of dermatology. 7 th ed. Oxford: Blackwell Science. pp. 28.1–28.39.
- ^ Cutaneous tuberculosis in Hongkong: A ten year retrospective study. Int J Dermatol. 1995. pp. 34:26–9.