Exacerbation of lesions in patients of borderline leprosy is seen in -
Type 1 or reversal reaction occurs in paucibacillary or multibacillary cases in unstable types like BT,BB,BL ENL is seen only in MB cases like BL and LL type only Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 342
ENL (erythema nodosum leprosum)
Lepra reaction type I
Jarisch-Herheimer reaction
Resolving leprosy
Communicable diseases