This is because children from countries of high incidence of tuberculosis can contract the lesion after contact with tuberculous sputum, by walking barefoot, sitting or playing on the ground.When recent, the skin lesion has the outside appearance of a wart or verruca, thus it can be confused with other kinds of warts. It evolves to an annular red-brown plaque with time, with central healing and gradual expansion in the periphery. In this phase, it can be confused with fungal infections such as blastomycosis and chromoblastomycosis. Cause
Diagnosis
The diagnosis is confirmed by a skin biopsy and a positive culture for acid-fast bacilli. A PPD test may also result positive. Treatment
Therapy for cutaneous tuberculosis is the same as for systemic tuberculosis, and usually consists of a 4-drug regimen, i.e., isoniazid, rifampin, pyrazinamide, and ethambutol or streptomycin. See also
Tuberculosis
Tuberculosis classification
Tuberculosis diagnosis
Tuberculosis treatment
Prosectors paronychia

Notes
References
Goldman, G.;  Bolognia, J.L. Pinpointing cutaneous signs of tuberculosis: is it a common wart, or tuberculosis verrucosa cutis? Journal of Critical Illness,  Dec. 2002. External links
 Media related to Tuberculosis verrucosa cutis at Wikimedia Commons
Cutaneous tuberculosis. eMedicine.
Organ donation
While the diagnosis of brain death has become accepted as a basis for the certification of death for legal purposes, it is a very different state from biological death – the state universally recognized and understood as death. The continuing function of vital organs in the bodies of those diagnosed brain dead, if mechanical ventilation and other life-support measures are continued, provides optimal opportunities for their transplantation. When mechanical ventilation is used to support the body of a brain dead organ donor pending a transplant into an organ recipient, the donors date of death is listed as the date that brain death was diagnosed.In some countries (for instance, Spain, Finland, Wales, Portugal, and France), everyone is automatically an organ donor after diagnosis of death on legally accepted criteria, although some jurisdictions (such as Singapore, Spain, Wales, France, Czech Republic, Poland and Portugal) allow opting out of the system. Elsewhere, consent from family members or next-of-kin may be required for organ donation. In New Zealand, Australia, the United Kingdom (excluding Wales) and most states in the United States, drivers are asked upon application if they wish to be registered as an organ donor.In the United States, if the patient is at or near death, the hospital must notify a designated Organ Procurement Organization (OPO) of the details, and maintain the patient while the patient is being evaluated for suitability as a donor.