Concomitant erythema induratum of Bazin and papulonecrotic tuberculid: A rare manifestation

Abstract

The tuberculids represent a group of disorders resulting from hypersensitive immune reactions within the skin due to hematogenous dissemination of Mycobacterium tuberculosis or its antigens from a primary source. Erythema induratum of bazin, papulonecrotic tuberculid and lichen scrofulosorum are classified as true tuberculids. Tuberculids are rare manifestation and simultaneous occurrence of two tuberculids in one patient is even rarer. We report a case of 25 year lady presenting with erythema induratum and papulonecrotic tuberculid simultaneously. Though no source of active infection was found, her lesions were found to be consistent with the diagnosis clinicopathologically and resolved with antitubercular treatment. Concomitant occurrence of two tuberculids in one patient is a rare manifestation and when this has been reported, the commonest combination appeared to be erythema induratum of bazin and papulonecrotic tuberculid, similar to our case, which resolved with antitubercular treatment.

Nodular vasculitis or erythema induratum without cutaneous tuberculosis: An unusual presentation in an uncommon site

“…Lesions may ulcerate and heal with a depressed scar. Histologically, a vasculitis affecting small and mediumsized vessels is seen producing a dermal granuloma with epithelioid and giant cells and fat atrophy [6].…”