Bullous lupus is a rare systemic dermatosis, which is caused by antibodies against type VII collagen of the dermoepidermal junction. Although rarely, Kikuchi-Fujimoto disease can be associated with lupus and it is a histiocytic necrotizing lymphadenitis. Man, 22 years, presenting vesicolobullous lesions on the oral and genital mucosa, abdomen, buttocks, armpits and painful lymphadenomegaly, bicytopenia, protein...