The article provides data on the human immunodeficiency virus (HIV), a slowly progressive infectious disease that occurs as a result of HIV infection and affects the immune system, as a result of which the body becomes highly susceptible to opportunistic infections and tumors, leading to the death of the patient. The etiology, pathogenesis and clinical classification of HIV infection are discussed in detail. At the early stages of HIV infection, skin diseases often become a marker of the course of the disease and pose a serious problem. Cutaneous manifestations often reflect compromised immune status, which contributes to understanding long-term prognosis. With the advent of antiretroviral therapy, mortality from skin diseases, in particular from opportunistic infections, has decreased. However, serious dermatological problems still exist. The article provides data on concomitant diseases of HIV-infected patients. The clinical and pathogenetic features of diseases common among the general population (seborrheic dermatitis, psoriasis, vasculitis, fungal and herpetic infections), often with increased prevalence or severity in HIV-positive people, are discussed in detail.

Keywords: herpetic infections, fungal diseases, concomitant diseases, clinical course, dermatoses, HIV infection, malignant tumors