INTRODUCCIÓNLas inmunodeficiencias primarias son enfermedades hereditarias generalmente causadas por alteraciones monogénicas. Pueden afectar el sistema inmunitario en su desarrollo, su función, o en ambos.1 Se clasifican de acuerdo con la afección particular del sistema inmuno-
ABSTRACTPrimary immunodeficiencies (PID) are genetic diseases affecting immunological normal response. In the great majority of cases affected individual sare predisposed to recurrent and / or severe infections with impaired quality of life (QoL). The most frequent PID are defects in the production of antibodies. When diagnosis and treatment are not done properly, permanent damage may occur in affected organs and further affecting QoL.Objective: To evaluate QoL in patients with antibody PID compared with QoL of healthy controls.
Methods:Cross-sectional study with the application of the instrument "Pediatric Quality of Life Inventory" (PedsQL) in its Mexican Spanish validated version. The PedsQL score difference between children with PID and healthy children was determined by the Student t test. The effect of a delayed in diagnosis was evaluated by analysis in a covariance model. 28 patients were included. The median age was 5 years and 5 months.