Histoid Leprosy Presenting with Borderline Tuberculoid Leprosy in Type 1 reaction: An Uncommon Shift of Spectrum

Histoid leprosy is an uncommon variant of leprosy with characteristic clinical, immunological and bacteriological features and is considered to be a polar variant of lepromatous leprosy. Coexistence of other immunologically diverse forms of leprosy in histoid end of spectrum is very rare. We report a rare case of histoid leprosy on multi-drug therapy for last 7 months shifting to borderline tuberculoid spectrum in type 1 reaction or Wade’s contamination, spectral shift