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cutaneous tuberculosis; includes tuberculous chancre, tuberculosis verrucosa cutis
Etiology:
- direct inoculation of Mycobacteria from an exogenous source into a host can result in a tuberculous chancre or tuberculosis verrucosa cutis localized to site of inoculation
- military tuberculosis may spread hematogenously to skin
- lupus vulgaris is a chronic, scarring, deforming process that may result from lymphatic or hematogenous spread or M tuberculosis
- tuberculid
* spread of Mycobacteria from an endogenous source may result in scrofuloderma
Epidemiology:
- uncommon
Clinical manifestations:
- erythematous, follicle-based papules & hyperpigmented nodule on the trunk (back), arms & legs (case report) [1]
- lupus vulgaris may affect the central portion of the face & progress slowly over a long period of time.
Specific
tuberculid
General
tuberculosis
skin infection
References
- Rothaus C
A Man with Rash, Abdominal Pain, and Lymphadenopathy.
NEJM Resident 360. Jan 16, 2019
https://resident360.nejm.org/content_items/a-man-with-rash-abdominal-pain-and-lymphadenopathy