A 24-year-old woman with a history of systemic lupus erythematosus (SLE) presented with fever, polyarthralgia, and worsened neutropenia (0.5 x 109 /L). Her physical exam and other routine laboratory work up were unremarkable. Examination of a peripheral blood smear showed neutrophils (red arrows, A-C) engulfing homogenous, violaceus nuclear material (yellow arrows, A-C), confirming a suspected diagnosis of lupus flare. SLE-associated antinuclear antibodies opsonize nucleoproteins released from dying cells, with uptake by phagocytic cells, including polymorphonuclear leukocytes and macrophages, the so-called Lupus Erythematosus (LE) cells. First described in 1948 by Hargraves, Morton, and Richmond in bone marrow preparations from patients with SLE2 , LE cells are rarely identified on peripheral blood smears but may be found during acute flares like in our patient and can help make the correct diagnosis. This article is protected by copyright. All rights reserved.