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interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Limfop%C3%A8nia" title="Limfopènia – Catalan" lang="ca" hreflang="ca" data-title="Limfopènia" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Lymphopenie" title="Lymphopenie – German" lang="de" hreflang="de" data-title="Lymphopenie" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Linfocitopenia" title="Linfocitopenia – Spanish" lang="es" hreflang="es" data-title="Linfocitopenia" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%84%D9%86%D9%81%D9%88%D9%BE%D9%86%DB%8C" title="لنفوپنی – Persian" lang="fa" hreflang="fa" data-title="لنفوپنی" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Lymphop%C3%A9nie" title="Lymphopénie – French" lang="fr" hreflang="fr" data-title="Lymphopénie" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Linfocitopenia" title="Linfocitopenia – Italian" lang="it" hreflang="it" data-title="Linfocitopenia" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%AA%E3%83%B3%E3%83%91%E7%90%83%E6%B8%9B%E5%B0%91%E7%97%87" title="リンパ球減少症 – Japanese" lang="ja" hreflang="ja" data-title="リンパ球減少症" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Lymphopenie" title="Lymphopenie – Low German" lang="nds" hreflang="nds" data-title="Lymphopenie" data-language-autonym="Plattdüütsch" data-language-local-name="Low German" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Limfopenia" title="Limfopenia – Polish" lang="pl" hreflang="pl" data-title="Limfopenia" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Linfocitopenia" title="Linfocitopenia – Portuguese" lang="pt" hreflang="pt" data-title="Linfocitopenia" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Limfopenie" title="Limfopenie – Romanian" lang="ro" hreflang="ro" data-title="Limfopenie" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9B%D0%B8%D0%BC%D1%84%D0%BE%D0%BF%D0%B5%D0%BD%D0%B8%D1%8F" title="Лимфопения – Russian" lang="ru" hreflang="ru" data-title="Лимфопения" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Lenfositopeni" title="Lenfositopeni – Turkish" lang="tr" hreflang="tr" data-title="Lenfositopeni" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9B%D1%96%D0%BC%D1%84%D0%BE%D1%86%D0%B8%D1%82%D0%BE%D0%BF%D0%B5%D0%BD%D1%96%D1%8F" title="Лімфоцитопенія – Ukrainian" lang="uk" hreflang="uk" data-title="Лімфоцитопенія" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%B7%8B%E5%B7%B4%E7%BB%86%E8%83%9E%E5%87%8F%E5%B0%91%E7%97%87" title="淋巴细胞减少症 – Chinese" lang="zh" hreflang="zh" data-title="淋巴细胞减少症" data-language-autonym="中文" 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class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Medical condition</div><style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox ib-medical-condition"><tbody><tr><th colspan="2" class="infobox-above" style="background:#ccc">Lymphocytopenia</th></tr><tr><th scope="row" class="infobox-label">Other names</th><td class="infobox-data">Lymphopenia</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Medical_specialty" title="Medical specialty">Specialty</a></th><td class="infobox-data"><a href="/wiki/Hematology" title="Hematology">Hematology</a>, <a href="/wiki/Immunology" title="Immunology">immunology</a></td></tr></tbody></table> <p><b>Lymphocytopenia</b> is the condition of having an abnormally low level of <a href="/wiki/Lymphocytes" class="mw-redirect" title="Lymphocytes">lymphocytes</a> in the blood. Lymphocytes are a <a href="/wiki/White_blood_cell" title="White blood cell">white blood cell</a> with important functions in the immune system. It is also called <b>lymphopenia</b>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> The opposite is <a href="/wiki/Lymphocytosis" title="Lymphocytosis">lymphocytosis</a>, which refers to an excessive level of lymphocytes. </p><p>Lymphocytopenia may be present as part of a <a href="/wiki/Pancytopenia" title="Pancytopenia">pancytopenia</a>, when the total numbers of all types of blood cells are reduced. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Classification">Classification</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lymphocytopenia&action=edit&section=1" title="Edit section: Classification"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In some cases, lymphocytopenia can be further classified according to which kind of lymphocytes are reduced. If all three kinds of lymphocytes are suppressed, then the term is used without further qualification. </p> <ul><li>In <b>T lymphocytopenia</b>, there are too few <a href="/wiki/T_lymphocytes" class="mw-redirect" title="T lymphocytes">T lymphocytes</a>, but normal numbers of other lymphocytes. It causes, and manifests as, a <a href="/wiki/T_cell_deficiency" title="T cell deficiency">T cell deficiency</a>. This is usually caused by <a href="/wiki/HIV" title="HIV">HIV</a> infection (resulting in <a href="/wiki/AIDS" class="mw-redirect" title="AIDS">AIDS</a>), but may be <a href="/wiki/Idiopathic_CD4%2B_lymphocytopenia" title="Idiopathic CD4+ lymphocytopenia">Idiopathic CD4+ lymphocytopenia</a> (ICL), which is a very rare heterogeneous disorder defined by CD4+ T-cell counts below 300 cells/μL in the absence of any known immune deficiency condition, such as human immunodeficiency virus (HIV) infection or chemotherapy.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li>In <b>B lymphocytopenia</b>, there are too few <a href="/wiki/B_lymphocytes" class="mw-redirect" title="B lymphocytes">B lymphocytes</a>, but possibly normal numbers of other lymphocytes. It causes, and manifests as, a <a href="/wiki/Humoral_immune_deficiency" title="Humoral immune deficiency">humoral immune deficiency</a>. This is usually caused by <a href="/wiki/Medication" title="Medication">medications</a> that suppress the immune system.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (July 2020)">citation needed</span></a></i>]</sup></li> <li>In <b>NK lymphocytopenia</b>, there are too few <a href="/wiki/Natural_killer_cells" class="mw-redirect" title="Natural killer cells">natural killer cells</a>, but normal numbers of other lymphocytes. This is very rare.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (July 2020)">citation needed</span></a></i>]</sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="Causes">Causes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lymphocytopenia&action=edit&section=2" title="Edit section: Causes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Lymphocytopenia is commonly caused by a recent infection, such as the <a href="/wiki/Common_cold" title="Common cold">common cold</a> or <a href="/wiki/COVID-19" title="COVID-19">COVID-19</a>.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>Lymphocytopenia, but not idiopathic <a href="/wiki/CD4" title="CD4">CD4</a>+ lymphocytopenia, is associated with <a href="/wiki/Corticosteroid" title="Corticosteroid">corticosteroid</a> use, infections with <a href="/wiki/HIV" title="HIV">HIV</a> and other <a href="/wiki/Virus" title="Virus">viral</a>, <a href="/wiki/Bacterial" class="mw-redirect" title="Bacterial">bacterial</a>, and <a href="/wiki/Fungal" class="mw-redirect" title="Fungal">fungal</a> agents, <a href="/wiki/Malnutrition" title="Malnutrition">malnutrition</a>, <a href="/wiki/Systemic_lupus_erythematosus" class="mw-redirect" title="Systemic lupus erythematosus">systemic lupus erythematosus</a>,<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> severe <a href="/wiki/Stress_(medicine)" class="mw-redirect" title="Stress (medicine)">stress</a>,<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> intense or prolonged <a href="/wiki/Physical_exercise" class="mw-redirect" title="Physical exercise">physical exercise</a> (due to <a href="/wiki/Cortisol" title="Cortisol">cortisol</a> release),<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Rheumatoid_arthritis" title="Rheumatoid arthritis">rheumatoid arthritis</a>, <a href="/wiki/Sarcoidosis" title="Sarcoidosis">sarcoidosis</a>,<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Multiple_sclerosis" title="Multiple sclerosis">multiple sclerosis</a>,<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> and <a href="/wiki/Iatrogenic" class="mw-redirect" title="Iatrogenic">iatrogenic</a> (caused by other medical treatments) conditions. </p><p>Lymphocytopenia is a frequent, temporary result from many types of <a href="/wiki/Chemotherapy" title="Chemotherapy">chemotherapy</a>, such as with <a href="/wiki/Cytotoxic_agent" class="mw-redirect" title="Cytotoxic agent">cytotoxic agents</a> or immunosuppressive drugs. Some malignancies that have spread to involve the <a href="/wiki/Bone_marrow" title="Bone marrow">bone marrow</a>, such as <a href="/wiki/Leukemia" title="Leukemia">leukemia</a> or advanced <a href="/wiki/Hodgkin%27s" class="mw-redirect" title="Hodgkin's">Hodgkin's</a> disease,<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> also cause lymphocytopenia. </p><p>Another cause is infection with <a href="/wiki/Influenza_A_virus_subtype_H1N1" title="Influenza A virus subtype H1N1">Influenza A virus subtype H1N1</a> (and other subtypes of the <a href="/wiki/Influenza_A_virus" title="Influenza A virus">Influenza A virus</a>) and is then often associated with <a href="/wiki/Monocytosis" title="Monocytosis">Monocytosis</a>;<sup id="cite_ref-PMC2847387_11-0" class="reference"><a href="#cite_note-PMC2847387-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> H1N1 was responsible for the <a href="/wiki/Spanish_flu" title="Spanish flu">Spanish flu</a>, the <a href="/wiki/2009_flu_pandemic" class="mw-redirect" title="2009 flu pandemic">2009 flu pandemic</a> and in 2016 for the Influenza-epidemic in <a href="/wiki/Brazil" title="Brazil">Brazil</a>.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> The <a href="/wiki/SARS" title="SARS">SARS</a> disease caused lymphocytopenia.<sup id="cite_ref-low04_13-0" class="reference"><a href="#cite_note-low04-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> Among patients with laboratory-confirmed <a href="/wiki/COVID-19" title="COVID-19">COVID-19</a> in Wuhan China through January 29th, 2020, 83.2 percent had Lymphocytopenia at admission.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> </p><p>Large doses of <a href="/wiki/Radiation" title="Radiation">radiation</a>, such as those involved with <a href="/wiki/Nuclear_accidents" class="mw-redirect" title="Nuclear accidents">nuclear accidents</a> or medical <a href="/wiki/Whole_body_radiation" class="mw-redirect" title="Whole body radiation">whole body radiation</a>, may cause lymphocytopenia.<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Diagnosis">Diagnosis</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lymphocytopenia&action=edit&section=3" title="Edit section: Diagnosis"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Lymphocytopenia is diagnosed when the <a href="/wiki/Complete_blood_count" title="Complete blood count">complete blood count</a> shows a lymphocyte count lower than the age-appropriate reference interval (for example, below 0.9 x 10<sup>9</sup>/L in an adult).<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (July 2020)">citation needed</span></a></i>]</sup> </p> <div class="mw-heading mw-heading2"><h2 id="Other_animals">Other animals</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lymphocytopenia&action=edit&section=4" title="Edit section: Other animals"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Lymphocytopenia caused by <a href="/wiki/Feline_Leukemia_Virus" class="mw-redirect" title="Feline Leukemia Virus">Feline Leukemia Virus</a> and <a href="/wiki/Feline_immunodeficiency_virus" title="Feline immunodeficiency virus">Feline immunodeficiency virus</a> <a href="/wiki/Retroviral" class="mw-redirect" title="Retroviral">retroviral</a> infections is treated with <a href="/wiki/Lymphocyte_T-Cell_Immune_Modulator" class="mw-redirect" title="Lymphocyte T-Cell Immune Modulator">Lymphocyte T-Cell Immune Modulator</a>.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lymphocytopenia&action=edit&section=5" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.nhlbi.nih.gov/health-topics/lymphocytopenia">"Lymphocytopenia"</a>. <i>National Heart, Lung and Blood Institute</i>. 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dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist dd dd:first-child::before,.mw-parser-output .hlist dd dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style></div><div role="navigation" class="navbox" aria-label="Navbox" style="width:100%; margin:0.5em 0 0.5em 0;;padding:3px"><table class="nowraplinks navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;background: #EAECF0;color:black;">Classification</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><div style="position:relative; float:right; font-size:0.8em;"><a href="https://www.wikidata.org/wiki/Q485831" class="extiw" title="d:Q485831">D</a></div><div class="hlist" style="text-align:left;"><ul><li><b><a href="/wiki/International_Statistical_Classification_of_Diseases_and_Related_Health_Problems" class="mw-redirect" title="International Statistical Classification of Diseases and Related Health Problems">ICD</a>-<a href="/wiki/ICD-10" title="ICD-10">10</a></b>: <a rel="nofollow" class="external text" href="https://icd.who.int/browse10/2019/en#/D72.8">D72.8</a></li><li><b><a href="/wiki/International_Statistical_Classification_of_Diseases_and_Related_Health_Problems" class="mw-redirect" title="International Statistical Classification of Diseases and Related Health Problems">ICD</a>-<a href="/wiki/ICD-10-CM" title="ICD-10-CM">10-CM</a></b>: <a rel="nofollow" class="external text" href="https://icd10cmtool.cdc.gov/?fy=FY2024&query=D72.810">D72.810</a></li><li><b><a href="/wiki/International_Statistical_Classification_of_Diseases_and_Related_Health_Problems" class="mw-redirect" title="International Statistical Classification of Diseases and Related Health Problems">ICD</a>-<a href="/wiki/List_of_ICD-9_codes" title="List of ICD-9 codes">9-CM</a></b>: <a rel="nofollow" class="external text" href="http://www.icd9data.com/getICD9Code.ashx?icd9=288.8">288.8</a></li><li><b><a href="/wiki/Medical_Subject_Headings" title="Medical Subject Headings">MeSH</a></b>: <a rel="nofollow" class="external text" href="https://meshb.nlm.nih.gov/record/ui?ui=D008231">D008231</a></li><li><b><a href="/wiki/Diseases_Database" title="Diseases Database">DiseasesDB</a></b>: <a rel="nofollow" class="external text" href="http://www.diseasesdatabase.com/ddb7677.htm">7677</a></li></ul></div></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Lymphoid_and_complement_disorders_causing_immunodeficiency" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Lymphoid_and_complement_immunodeficiency" title="Template:Lymphoid and complement immunodeficiency"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Lymphoid_and_complement_immunodeficiency" title="Template talk:Lymphoid and complement immunodeficiency"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Lymphoid_and_complement_immunodeficiency" title="Special:EditPage/Template:Lymphoid and complement immunodeficiency"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Lymphoid_and_complement_disorders_causing_immunodeficiency" style="font-size:114%;margin:0 4em"><a href="/wiki/Lymphatic_system" title="Lymphatic system">Lymphoid</a> and <a href="/wiki/Complement_system" title="Complement system">complement</a> disorders causing <a href="/wiki/Immunodeficiency" title="Immunodeficiency">immunodeficiency</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Primary_immunodeficiency" title="Primary immunodeficiency">Primary</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Antibody" title="Antibody">Antibody</a>/<a href="/wiki/Humoral_immune_deficiency" title="Humoral immune deficiency">humoral</a><br />(<a href="/wiki/B_cell" title="B cell">B</a>)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Hypogammaglobulinemia" title="Hypogammaglobulinemia">Hypogammaglobulinemia</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/X-linked_agammaglobulinemia" title="X-linked agammaglobulinemia">X-linked agammaglobulinemia</a></li> <li><a href="/wiki/Transient_hypogammaglobulinemia_of_infancy" title="Transient hypogammaglobulinemia of infancy">Transient hypogammaglobulinemia of infancy</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Dysgammaglobulinemia" title="Dysgammaglobulinemia">Dysgammaglobulinemia</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Selective_immunoglobulin_A_deficiency" title="Selective immunoglobulin A deficiency">IgA deficiency</a></li> <li><a href="/wiki/IgG_deficiency" title="IgG deficiency">IgG deficiency</a></li> <li><a href="/wiki/Immunoglobulin_M_deficiency" class="mw-redirect" title="Immunoglobulin M deficiency">IgM deficiency</a></li> <li><a href="/wiki/Hyper_IgM_syndrome" title="Hyper IgM syndrome">Hyper IgM syndrome</a> (<a href="/wiki/Hyper-IgM_syndrome_type_1" title="Hyper-IgM syndrome type 1">1</a></li> <li><a href="/wiki/Hyper-IgM_syndrome_type_2" title="Hyper-IgM syndrome type 2">2</a></li> <li><a href="/wiki/Hyper-IgM_syndrome_type_3" title="Hyper-IgM syndrome type 3">3</a></li> <li><a href="/wiki/Hyper-IgM_syndrome_type_4" title="Hyper-IgM syndrome type 4">4</a></li> <li><a href="/wiki/Hyper-IgM_syndrome_type_5" title="Hyper-IgM syndrome type 5">5</a>)</li> <li><a href="/wiki/Wiskott%E2%80%93Aldrich_syndrome" title="Wiskott–Aldrich syndrome">Wiskott–Aldrich syndrome</a></li> <li><a href="/wiki/Hyperimmunoglobulin_E_syndrome" title="Hyperimmunoglobulin E syndrome">Hyper-IgE syndrome</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Common_variable_immunodeficiency" title="Common variable immunodeficiency">Common variable immunodeficiency</a></li> <li><a href="/wiki/ICF_syndrome" class="mw-redirect" title="ICF syndrome">ICF syndrome</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/T_cell_deficiency" title="T cell deficiency">T cell deficiency</a><br />(<a href="/wiki/T_cell" title="T cell">T</a>)</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Thymic_hypoplasia" title="Thymic hypoplasia">thymic hypoplasia</a>:</i> <i>hypoparathyroid</i> (<a href="/wiki/DiGeorge_syndrome" title="DiGeorge syndrome">Di George's syndrome</a>)</li> <li><i>euparathyroid</i> (<a href="/wiki/Nezelof_syndrome" title="Nezelof syndrome">Nezelof syndrome</a></li> <li><a href="/wiki/Ataxia%E2%80%93telangiectasia" title="Ataxia–telangiectasia">Ataxia–telangiectasia</a>)</li></ul> <p><i>peripheral:</i> <a href="/wiki/Purine_nucleoside_phosphorylase_deficiency" title="Purine nucleoside phosphorylase deficiency">Purine nucleoside phosphorylase deficiency</a> </p> <ul><li><a href="/wiki/Hyper_IgM_syndrome" title="Hyper IgM syndrome">Hyper IgM syndrome</a> (<a href="/wiki/Hyper-IgM_syndrome_type_1" title="Hyper-IgM syndrome type 1">1</a>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Severe_combined_immunodeficiency" title="Severe combined immunodeficiency">Severe</a> <a href="/wiki/Combined_immunodeficiencies" title="Combined immunodeficiencies">combined</a><br />(B+T)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i>x-linked:</i> <a href="/wiki/X-linked_severe_combined_immunodeficiency" title="X-linked severe combined immunodeficiency">X-SCID</a><br /><i>autosomal:</i> <a href="/wiki/Adenosine_deaminase_deficiency" title="Adenosine deaminase deficiency">Adenosine deaminase deficiency</a></li> <li><a href="/wiki/Omenn_syndrome" title="Omenn syndrome">Omenn syndrome</a></li> <li><a href="/wiki/ZAP70_deficiency" title="ZAP70 deficiency">ZAP70 deficiency</a></li> <li><a href="/wiki/Bare_lymphocyte_syndrome" title="Bare lymphocyte syndrome">Bare lymphocyte syndrome</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Immunodeficiency#acquired" title="Immunodeficiency">Acquired</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HIV/AIDS" title="HIV/AIDS">HIV/AIDS</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Leukopenia" title="Leukopenia">Leukopenia</a>:<br /><a class="mw-selflink selflink">Lymphocytopenia</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Idiopathic_CD4%2B_lymphocytopenia" title="Idiopathic CD4+ lymphocytopenia">Idiopathic CD4+ lymphocytopenia</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Complement_deficiency" title="Complement deficiency">Complement<br />deficiency</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/C1-inhibitor" title="C1-inhibitor">C1-inhibitor</a></i> (<a href="/wiki/Angioedema" title="Angioedema">Angioedema</a>/<a href="/wiki/Hereditary_angioedema" title="Hereditary angioedema">Hereditary angioedema</a>)</li> <li><a href="/wiki/Complement_2_deficiency" title="Complement 2 deficiency">Complement 2 deficiency</a>/<a href="/wiki/Complement_4_deficiency" title="Complement 4 deficiency">Complement 4 deficiency</a></li> <li><a href="/wiki/MBL_deficiency" title="MBL deficiency">MBL deficiency</a></li> <li><a href="/wiki/Properdin_deficiency" title="Properdin deficiency">Properdin deficiency</a></li> <li><a href="/wiki/Complement_3_deficiency" title="Complement 3 deficiency">Complement 3 deficiency</a></li> <li><a href="/wiki/Terminal_complement_pathway_deficiency" title="Terminal complement pathway deficiency">Terminal complement pathway deficiency</a></li> <li><a href="/wiki/Paroxysmal_nocturnal_hemoglobinuria" title="Paroxysmal nocturnal hemoglobinuria">Paroxysmal nocturnal hemoglobinuria</a></li> <li><a href="/wiki/Complement_receptor_deficiency" class="mw-redirect" title="Complement receptor deficiency">Complement receptor deficiency</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" 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