•

•

M. tuberculosis can induce a spectrum of cutaneous changes depending on the route of infection and immunological status of the host.

Classification of   cutaneous tuberculosis:

1. Inoculation tuberculosis. (exogenous source)

2. Secondary tuberculosis. (endogenous source)

3. Haematogenous tuberculosis.

4. Eruptive tuberculosis. 

1. Inoculation Tuberculosis
(exogenous source):

A. Tuberculosis chancre.

•

B. TVC (warty tuberculosis).

•

C. Lupus vulgaris (some). 

 

2. Secondary tuberculosis  (endogenous):

A. Contiguous spread:      Scrofuloderma.

•

B. Auto-inoculation   :     Orificial tuberculosis. 

 

3. Haematogenous tuberculosis:

A. Acute milliary tuberculosis.

B. Lupus vulgaris (some).

C. Tuberculous gumma.

Eruptive tuberculosis (the tuberculides):

A. Micropapular: Lichen scrofulosorum.

•

B. Papular          : Papular or Papulonecrotic              tuberculide.

 

C. Nodular         : Erythema induratum of   Bazin.

  

Tuberculous chancre:http://tuberculouschancre.blogspot.com/