There is tuberculosis-specific immunoreactivity. These are post-primary forms of tuberculosis (the patients have already had a tuberous primary complex). Typically, there is a lack of pathogens, tuberculous granulomas and a positive tuberculin test.
- Examples:
- Tuberculosis ctuis verrucosa.
- Lupus vulgaris.
- Tuberculosis cutis colliquativa.
- Tuberculosis subcutanea et fistulosa.