Papulonecrotic tuberculid with scrofuloderma: an uncommon association.

Cutaneous tuberculosis can be classified as true cutaneous tuberculosis and tuberculids which is regarded as a hypersensitivity reaction to M. tuberculosis in patients with a high degree of tuberculin sensitivity. Papulonecrotic tuberculid (PNT) is a form of tuberculid. It is an uncommon manifestation even in areas with high prevalence of tuberculosis. We report a case of 35-year-old man who presented with necrotizing papules in symmetrical fashion over the trunk and extremities for last one year along with a discharging sinus in right axilla for last two months. Papulonecrotic tuberculid (PNT) with scrofuloderma were suspected on clinical examination. Mantoux test was strongly positive with 20x20mm. He was treated successfully with ATT without any further appearance of new lesions.