Rheumatic manifestations of HIV/AIDS.

Rheumatic manifestations of HIV infection encompass a wide spectrum of disorders, arising from direct viral effects, immune dysregulation, opportunistic infections, or antiretroviral therapy (ART)-induced complications. These manifestations can occur at any stage of HIV, and include arthralgia, HIV-associated arthritis, spondyloarthropathies (SpA), inflammatory myopathies, vasculitides, and opportunistic musculoskeletal infections. Arthralgia is common and self-limiting, whereas HIV-associated arthritis mimics rheumatoid arthritis. SpA, particularly reactive arthritis, psoriatic arthritis, and undifferentiated forms, often present atypically in HIV, with pathogenesis linked to immune dysfunction rather than HLA-B27. Inflammatory myopathies, including polymyositis and inclusion body myositis, exhibit distinct clinical features, often necessitating cautious immunomodulatory treatment. Opportunistic infections, such as septic arthritis and pyomyositis, are more frequent with advanced immunosuppression. The advent of HAART has modified the prevalence and presentation of these disorders, with immune reconstitution inflammatory syndrome (IRIS) emerging as a new challenge. Management strategies require balancing disease control with minimizing immunosuppressive risks.