Lichen Scrofulosorum

Abstract

Cutaneous tuberculosis (TB) known as tuberculid forms 1%–1.5% of all extrapulmonary manifestation of TB. Tuberculids result from a hypersensitivity reaction to an extracutaneous source of Mycobacterium tuberculosis in individuals with high immunity and can be difficult to diagnose. Lichen scrofulosorum (LS) is a rare form of tuberculid predominantly seen in children and young adults; we report a case of an 8-year-old boy evaluated for fever and mediastinal lymphadenopathy in whom the skin lesions, LS, served as an important clue for the diagnosis of tuberculous lymphadenitis.

Cutaneous tuberculosis in the pediatric population: A review

“… 59 Cervical lymphadenopathy may also be appreciated. 60 Histologically, granulomatous inflammation without caseation with a parakeratotic epidermis may be appreciated, but no AFB will be seen with staining. 60 , 61 TST is positive.…”

“… 60 Histologically, granulomatous inflammation without caseation with a parakeratotic epidermis may be appreciated, but no AFB will be seen with staining. 60 , 61 TST is positive. 59 Anti-tuberculosis drugs for 6 months is the standard of care.…”

“… 59 Anti-tuberculosis drugs for 6 months is the standard of care. 60 Lesions resolve in 8-12 weeks on average without scarring. 59 , 62 …”