Immunodeficiency is a common thought among both patients and physicians when confronted with what is perceived as an excessive number, duration, or severity of infections. Because of this, the starting point for evaluating patients for suspected immunodeficiency is based on what constitutes ”too many infections.” It generally is agreed that children with normal immune systems may have an averag...

Selective IgA deficiency (IgAD) is the most common primary genetic immune defect, with high prevalence in Western countries and relatively low prevalence in the East. The laboratory definition of IgAD is based on the measured serum component. However, the important manifestations of deficiency of IgA, the most prevalent of human antibodies, relate to the absence of secretory IgA, which covers a...

epidemiological studies have shown wide geographical and racial variation in the prevalence and patterns of immunodeficiency disorders. to determine the frequency of primary immunodeficiencies (pid) in iran, the iranian primary immunodeficiencies registry (ipidr) was organized in 1999. the diagnosis of immunodeficiency in our patients was based on standard criteria. the patient’s data were extr...

conclusions subcutaneous nodules in the absence of a local reaction at the site of bcg vaccination may be the sole manifestation of disseminated bcg disease. case presentation we report on an 11-months-old boy with prolonged fever and diffuse hyperpigmented subcutaneous nodules. due to lymphopenia, oral thrush and severe adverse reaction to bcg vaccination, the possibility of primary immunodefi...

background: primary antibody deficiency, the most common primary immunodeficiency disorder, represents a heterogeneous spectrum of conditions caused by a defect in any critical stage of b cell development and is characterized by impaired production of normal amounts of antigen-specific antibodies. objective: this retrospective study aimed at description and analysis of demographic, clinical, im...