People dying of immune deficiency diseases present with specific clinical signs of illness
Clinical evidence consistently shows that patients with immune deficiency diseases present with recognizable patterns of specific infections and clinical signs.
The retrieved literature thoroughly documents the specific clinical manifestations, opportunistic infections, and presentations associated with various primary and secondary immune deficiency disorders, thus supporting the claim.
E. Lafont, P. Conan, V. Rodriguez-Nava, D. Lebeaux. Invasive Nocardiosis: Disease Presentation, Diagnosis and Treatment – Old Questions, New Answers?. 2020. https://doi.org/10.2147/IDR.S249761
Paper [0] notes that invasive nocardiosis often reveals underlying cell-mediated immunity defects or primary immunodeficiencies.
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J W Tappero, B A Perkins, J D Wenger, T G Berger. Cutaneous manifestations of opportunistic infections in patients infected with human immunodeficiency virus. 1995. https://doi.org/10.1128/cmr.8.3.440
Paper [1] details specific cutaneous and opportunistic infection manifestations in HIV-infected patients with advanced immune deficiency.
J. Godsell, S. Chan, C. Slade, V. Bryant, J. Douglass, J. Sasadeusz, M. Yong. Cytomegalovirus in primary immunodeficiency. 2021. https://doi.org/10.1097/QCO.0000000000000797
Paper [2] discusses how cytomegalovirus presents in patients with primary immunodeficiencies.
M. Gold, Chandini Kannan, A. Schofield, Alane Rogers, Charles J Weeks, Sruthi Dontu, Joseph Suchomski, Nabil Ghani, S. Doss, Jacob M Boccucci, Mei Zheng, A. Keruakous. The Presentation, Diagnosis, and Management of Autosomal Dominant Common Variable Immunodeficiency Type XII with NFKB1 Mutation and Autoimmune Neutropenia Treated with Allogenic Stem Cell Transplantation. 2025. https://doi.org/10.3390/hematolrep17050049
Paper [3] outlines specific clinical presentations including fever, lymphadenopathy, and neutropenia in a patient with CVID.
I. G. Magana Ceballos, R. Lemus, A. Castillo, M. Tellez, D. Varon, Á. Luz, K. Esquerra-Cazares, M. A. Rosado-Pinzon, W. De Jesús-Rojas, G. Colasurdo, R. Mosquera. B39-14 Beyond Immunodeficiency: Detection of Activated PI3kδ Syndrome Through a Bronchiectasis and Primary Ciliary Dyskinesia Program. 2026. https://doi.org/10.1093/ajrccm/aamag162.3364
Paper [4] describes how Activated PI3Kδ Syndrome presents with recurrent sinopulmonary infections, eczema, and chronic diarrhea.
Aicha El Allam, Sara El Fakihi, Hicham Tahoune, K. Sahmoudi, Houria Bousserhane, Y. Bakri, N. El Hafidi, F. Seghrouchni. Cytometric analysis and clinical features in a Moroccan cohort with severe combined immunodeficiency. 2022. https://doi.org/10.3233/HAB-211510
Paper [5] highlights that patients with severe combined immunodeficiency present with specific clinical manifestations like pneumonia, candidiasis, and diarrhea.
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