Eric Kawana, B.S.; Rodd Rahmani, M.D.; Scott Turnbull, D.O.; Adam Khattak, D.O.; Kenny Do, B.S.; and Aditi Singh, M.D. (all Medicine) published an article titled, "A Rare Presentation of Systemic Lupus Erythematosus in a Patient With Fever of Unknown Origin" in the journal Cureus. 

This case presents a 23-year-old male with a rare presentation of lupus as fever of unknown origin (FUO). The patient's clinical symptoms, examination findings, and laboratory results painted a complex picture that necessitated considering macrophage activation syndrome and adult-onset Still's disease but ultimately led to the diagnosis of systemic lupus erythematosus.