Home  » About PI  » Specific Defects Hotline 1-866-INFO-4-PI Search:  In recent years, our knowledge of Primary Immunodeficiencies (PI) has increased exponentially. This section can assist healthcare professionals, patients, and their families by providing quick and easy access to information on PI. Primary Immunodeficiencies The majority of PI patients are diagnosed with one of the following specific conditions. Please click on a link to find additional information and descriptions of that disease. Please note, the information contained on these pages is not intended to provide specific medical advice, rather it is intended for informational purposes only, in order to provide a better understanding of these diseases. Please consult with a qualified physician for diagnosis and answers to your questions. Ataxia-Telangictaisa Chediak-Higashi Syndrome Chronic Granulomatous Disease Common Variable Immunodeficiency Complement Deficiencies DiGeorge Syndrome Hyper IgM Immunodeficiency IgG Subclass Deficiency Leukocyte Adhesion Deficiency MHC Class II Deficiency Selective IgA Deficiency Severe Combined Immunodeficiency Wiskott Aldrich Syndrome X-Linked Agammaglobulinemia X-linked Hyper IgM Syndrome X-Linked Lymphoproliferative X-Linked Severe Combined Immunodeficiency Please visit PubMed for additional information on PI. View the Practice Parameter for the Diagnosis & Management of Primary Immunodeficiency   Home  |  10 Warning Signs  |  Find an Expert  |  PI Awareness Campaign  |  Jeffrey Modell Centers Network  |  Contact Us Privacy Statement / Disclaimer  Public Service Announcement  © 2013 Jeffrey Modell Foundation. All rights reserved. Maintained by Project Gestalt, Inc.