Clinical Case of a Rare Immunodeficiency — Idiopathic CD4+-lymphocytopenia in Pediatrician’s Practice

The article presents data on the prevalence, molecular and genetic aspects and potential mechanisms of idiopathic CD4+-lymphocytopenia occurrence, as well as the criteria for diagnosis in children and variants of the clinical course of this pathology. This is a rare immunity disorder with heterogeneous clinical manifestations (from asymptomatic course to severe opportunistic infections and deaths) and immunological profile. Practical observation of a clinical case of CD4+-lymphocytopenia in a child — a boy between the ages of 4 and 10 months of life has been described.