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Fig. 1: Clinical spectrum of leprosy. CMI = cell-mediated immunity, TT = tuberculoid leprosy, BT = borderline tuberculoid leprosy, BB = borderline leprosy, BL = borderline lepromatous leprosy, LL = lepromatous leprosy.
Fig. 2: Clinical signs associated with leprosy in various stages of the disease. A: Large hypopigmented macule of TT leprosy. B: BL leprosy. C: BB leprosy before therapy. D: The same patient as in Fig. 2C undergoing a type I reversal reaction during therapy. Note the accentuation and erythema of macules relative to Fig. 2C. E: Patient with BT leprosy undergoing a type I reversal reaction. F: Patient with LL leprosy undergoing a type II reaction (erythema nodosum leprosum). Note the raised, erythematous crops of nodules.