IgA Deficiency
At a Glance Diagnosis of IgA deficiency should be considered in patients who have frequent and/or severe recurrent sinusitis, otitis, or pneumonia caused by typical encapsulated bacteria, such as streptococcus (including pneumococcal disease), staphylococcus, and hemophilus. Unexplained bronchiectasis, reflecting recurrent or persistent pneumonitis, should also raise the possibility of IgA deficiency. What Tests Should I…