title: An unusual cause of recurrent pneumonia in adults.
abstract: Selective IgM deficiency is a rare primary immunodeficiency defined as isolated low levels of IgM. It presents with recurrent infections and has been described as first presenting in adulthood with recurrent respiratory tract infections. Unlike its better known counterpart of IgA deficiency, this particular immunodeficiency is often overlooked. We present a case of selective IgM deficiency who presented with recurrent respiratory infections.
authors.affiliation: Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
authors.forename: Varun
authors.initials: V
authors.lastname: Dhir
authors.affiliation: Department of Internal Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
authors.forename: Vinay
authors.initials: V
authors.lastname: Sagar
authors.affiliation: Department of Pulmonary Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
authors.forename: Ashutosh
authors.initials: A
authors.lastname: Aggarwal
authors.affiliation: Department of Pediatric Allergy and Immunology, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
authors.forename: Amit
authors.initials: A
authors.lastname: Rawat
authors.affiliation: Department of Radiodiagnosis, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
authors.forename: Manphool
authors.initials: M
authors.lastname: Singhal
keywords: Dysgammaglobulinemia; recurrent pneumonia; selective IgM deficiency