Scrofuloderma, also called 'tuberculosis colliquativa cutis' is a common form of cutaneous tuberculosis affecting children and young adults in which there is breakdown of skin overlying a tuberculous focus in the lymph node, bone or joint.1,4 Initially, there are firm painless, subcutaneous nodules that gradually enlarge and
suppurate.1,3,4 These lead to ulcers and sinus tracts with undermined edges and ultimately puckered scars.1 Diagnosis is usually performed by needle aspiration biopsy or excisional biopsy of the mass and the microbiological demonstration of stainable acid- fast bacteria.3 PCR has a low sensitivity but high specificity.5,6