Overlap Syndrome of Immune Reconstitution Inflammatory Syndrome Secondary to Disseminated Mycobacterial Infection and Hemophagocytic Lymphohistiocytosis in a Patient With Newly Diagnosed HIV/AIDS.

Immune reconstitution inflammatory syndrome (IRIS) following initiation of antiretroviral therapy (ART) has variable incidence but is not uncommon and has the potential to cause long-term consequences and fatal outcomes in patients with HIV. Hemophagocytic lymphohistiocytosis (HLH) is a separate syndrome of excess immune activation, but may coexist with IRIS and necessitate a unique treatment approach. In this report, the case of a patient with newly diagnosed HIV/AIDS who was found to have both mycobacterial IRIS and HLH is presented.