This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
Type 2 lepra reaction is an example of - 
Select and explain. 
A. Type I hypersensitivity, B. Type II hypersensitivity, C. Type III hypersensitivity, D. Type IV hypersensitivity
C: Type III hypersensitivity
Answer: C: Type III hypersensitivity 
Explanation: TType 2 lepra reaction occurs in LL and BL types, usually a few months after the institution of chemotherapy. Crops of tender, inflamed subcutaneous nodules appear, with fever , lymphadenopathy and ahralgia. This is an ahus type response ( type III hypersensitivity reaction), to antigen released from dead lepra cells and is characterised by neutrophil infiltration and IgG and complement deposition in the lesions. Reference : Anathanarayan & paniker's 9th edition, pg no: 367 <\p>