Case Presentation: A 25-year-old woman with autism, developmental delay, and seizure disorder presented with weakness, joint pain, and lethargy. Initial findings included pancytopenia, elevated inflammatory markers, and hyperferritinemia. She was diagnosed with hemophagocytic lymphohistiocytosis (HLH) secondary to adult-onset Still’s disease. Despite treatment with corticosteroids, anakinra, and tocilizumab, her condition worsened, necessitating ICU admission. Discussion: HLH [...]