Lues maligna is caused by?: (A) Borrelia, (B) Leptospira, (C) Brachyspira, (D) Treponema
Answer is D. Ans. is 'd' i.e.,TreponemaLues maligna represents a rare form secondary syphilis ( caused by treponema pallidum).also known as 'malignant syphilis' or 'ulceronodular syphilis'.