: Occurs when bacteria enter the skin directly through a cut or abrasion. The most common form is Tuberculosis Verrucosa Cutis , often seen on the hands of laboratory workers or physicians ("prosector’s wart").
: A chronic, progressive form often appearing on the face as reddish-brown "apple-jelly" nodules that can lead to significant scarring.
Because the appearance of cutaneous tuberculosis varies based on the patient's immune response and the method of infection, it is categorized into several forms: Download Tuberculose cutanГ©e pdf
Diagnosing cutaneous TB is notoriously difficult because its lesions can mimic other skin conditions like sarcoidosis or leprosy. Tuberculosis Overview - StatPearls - NCBI Bookshelf
: These are skin eruptions (like Erythema Induratum ) caused by a hypersensitivity reaction to the bacteria rather than the presence of live bacteria in the skin itself. Diagnosis and Challenges : Occurs when bacteria enter the skin directly
: The most common form, typically occurring when an infected lymph node or bone breaks through the skin surface, creating ulcers and sinus tracts.
(TBC) is a rare and diverse clinical manifestation of Mycobacterium tuberculosis infection, representing about 1% to 2% of all extrapulmonary cases. It occurs when the bacteria, which primarily target the lungs, affect the skin through direct inoculation, spread from an underlying internal infection, or through the bloodstream. Clinical Classifications (TBC) is a rare and diverse clinical manifestation
: The infection spreads from a pre-existing internal focus.
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