#Tuberculosis of the Skin.#--Interest attaches chiefly to the primary
forms of tuberculosis of the skin in which the bacilli penetrate from
without--inoculation tubercle and lupus.
#Inoculation Tubercle.#--The appearances vary with the conditions under
which the inoculation takes place. As observed on the fingers of adults,
the affection takes the form of an indolent painless swelling, the
epidermis being red and glazed, or warty, and irregularly fissured.
Sometimes the epidermis gives way, forming an ulcer with flabby
granulations. The infection rarely spreads to the lymphatics, but we
have seen inoculation tubercle of the index-finger followed by a large
cold abscess on the median side of the upper arm and by a huge mass of
breaking down glands in the axilla.
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