Haemophagocytic Lymphohistiocytosis Triggered by Visceral Leishmaniasis Masquerading as Epstein-Barr Virus (EBV)-Associated Haemophagocytic Lymphohistiocytosis in Rheumatoid Arthritis: A Case Report and Literature Review
Haemophagocytic lymphohistiocytosis (HLH) is a life-threatening hyperinflammatory syndrome caused by uncontrolled immune activation. In adults, it is usually secondary to an underlying condition, such as infection, malignancy, or autoimmune disease. Identifying this trigger is essential, as treatment depends on the cau...