Also known as: Hemophagocytic Lymphohistiocytosis (HLH) / Haemophagocytic Lymphohistiocytosis / Hemophagocytic Lymphohistiocytoses / Hemophagocytic Lymphohisticytosis / Hemophagocytic lymphohistiocytosis (disorder) / Lymphohistiocytosis, Hemophagocytic / Primary hemophagocytic lymphohistiocytosis / Primary haemophagocytic lymphohistiocytosis / Familial hemophagocytic lymphohistiocytosis (disorder) / Familial Hemophagocytic Lymphocytosis / Familial haemophagocytic lymphohistiocytosis / Familial hemophagocytic lymphohistiocytosis