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<p>Created page with &quot;====Infections (~30%)==== *&#039;&#039;&#039;Abscess&#039;&#039;&#039; **Intra-abdominal <a href="/wiki/Abscess" class="mw-redirect" title="Abscess">abscess</a> (hepatic, subphrenic, pelvic, perinephric) **<a href="/wiki/Epidural_abscess" class="mw-redirect" title="Epidural abscess">Epidural abscess</a> **Dental abscess **<a href="/wiki/Prostatitis" title="Prostatitis">Prostatitis</a> *&#039;&#039;&#039;Endovascular&#039;&#039;&#039; **<a href="/wiki/Endocarditis" title="Endocarditis">Endocarditis</a> **Infected vascular graft/device **Mycotic aneurysm *&#039;&#039;&#039;Mycobacterial&#039;&#039;&#039; **<a href="/wiki/Tuberculosis" title="Tuberculosis">Tuberculosis</a> (pulmonary and extrapulmonary) **Nontuberculous mycobacteria (MAC) *&#039;&#039;&#039;Viral&#039;&#039;&#039; **<a href="/wiki/EBV" class="mw-redirect" title="EBV">EBV</a> (mononucleosis) **<a href="/wiki/CMV" class="mw-redirect" title="CMV">CMV</a> **<a href="/wiki/HIV" class="mw-redirect" title="HIV">HIV</a> (acute seroconversion) **<a href="/wiki/Hepatitis_B" title="Hepatitis B">Hepatitis B</a>, he...&quot;</p> <p><b>Página nueva</b></p><div>====Infections (~30%)====<br /> *'''Abscess'''<br /> **Intra-abdominal [[abscess]] (hepatic, subphrenic, pelvic, perinephric)<br /> **[[Epidural abscess]]<br /> **Dental abscess<br /> **[[Prostatitis]]<br /> *'''Endovascular'''<br /> **[[Endocarditis]]<br /> **Infected vascular graft/device<br /> **Mycotic aneurysm<br /> *'''Mycobacterial'''<br /> **[[Tuberculosis]] (pulmonary and extrapulmonary)<br /> **Nontuberculous mycobacteria (MAC)<br /> *'''Viral'''<br /> **[[EBV]] (mononucleosis)<br /> **[[CMV]]<br /> **[[HIV]] (acute seroconversion)<br /> **[[Hepatitis B]], [[hepatitis C]]<br /> **[[COVID-19]]<br /> *'''Fungal'''<br /> **[[Histoplasmosis]]<br /> **[[Coccidioidomycosis]]<br /> **[[Blastomycosis]]<br /> **[[Cryptococcosis]]<br /> **[[Aspergillosis]] (immunocompromised)<br /> *'''Parasitic'''<br /> **[[Malaria]]<br /> **[[Toxoplasmosis]]<br /> **Visceral leishmaniasis<br /> **Amebiasis (liver abscess)<br /> *'''Bacterial'''<br /> **[[Osteomyelitis]]<br /> **[[Pyelonephritis]]/renal abscess<br /> **[[Cholangitis]]<br /> **[[Sinusitis]] (chronic)<br /> **[[Brucellosis]]<br /> **[[Q fever]] ([[Coxiella burnetii]])<br /> **[[Lyme disease]]<br /> **[[Cat scratch disease]] (''Bartonella'')<br /> **[[Syphilis]]<br /> **[[Whipple's disease]]<br /> **[[Rat-bite fever]]<br /> <br /> ====Malignancy (~20%)====<br /> *'''Hematologic''' (most common malignant cause of FUO)<br /> **[[Lymphoma]] (Hodgkin and non-Hodgkin)<br /> **[[Leukemia]] (especially acute leukemia)<br /> **Multiple myeloma<br /> **Myelodysplastic syndrome<br /> **Castleman disease<br /> *'''Solid Tumors'''<br /> **Renal cell carcinoma<br /> **Hepatocellular carcinoma<br /> **Colon cancer<br /> **Pancreatic cancer<br /> **Atrial myxoma<br /> **Pheochromocytoma<br /> <br /> ====Autoimmune/Inflammatory (~20%)====<br /> *'''Connective Tissue Disease'''<br /> **[[Adult-onset Still's disease]] (AOSD)<br /> **[[Systemic JIA]] (sJIA) — pediatric equivalent<br /> **[[Systemic lupus erythematosus]] (SLE)<br /> **[[Rheumatoid arthritis]]<br /> **[[Polymyositis]]/dermatomyositis<br /> **Mixed connective tissue disease<br /> *'''Vasculitis'''<br /> **Giant cell (temporal) arteritis / polymyalgia rheumatica (especially adults &gt;50)<br /> **[[Polyarteritis nodosa]]<br /> **Granulomatosis with polyangiitis (Wegener's)<br /> **Eosinophilic granulomatosis with polyangiitis (Churg-Strauss)<br /> **Takayasu arteritis<br /> **[[Kawasaki disease]] (pediatric)<br /> *'''Granulomatous'''<br /> **[[Sarcoidosis]]<br /> **Crohn's disease / [[inflammatory bowel disease]]<br /> *'''Autoinflammatory/Periodic Fever Syndromes'''<br /> **[[Familial Mediterranean fever]]<br /> **TNF receptor-associated periodic syndrome (TRAPS)<br /> **Hyper-IgD syndrome (HIDS)<br /> **PFAPA syndrome (pediatric)<br /> **Schnitzler syndrome<br /> *'''Other'''<br /> **[[Macrophage activation syndrome]] (MAS) / [[hemophagocytic lymphohistiocytosis]] (HLH)<br /> **Kikuchi-Fujimoto disease (histiocytic necrotizing lymphadenitis)<br /> <br /> ====Drug Fever====<br /> *[[Antibiotics]] (beta-lactams, sulfonamides, nitrofurantoin)<br /> *[[Anticonvulsants]] (phenytoin, carbamazepine)<br /> *[[Allopurinol]]<br /> *[[Heparin]]<br /> *Procainamide<br /> *[[DRESS syndrome]]<br /> *[[Serotonin syndrome]]<br /> *[[Neuroleptic malignant syndrome]]<br /> *Chemotherapy/biologic agents<br /> <br /> ====Endocrine/Metabolic====<br /> *[[Thyrotoxicosis]] / [[thyroid storm]]<br /> *[[Adrenal insufficiency]]<br /> *[[Pheochromocytoma]]<br /> *Hypertriglyceridemia (rarely)<br /> <br /> ====Thromboembolic/Vascular====<br /> *[[Pulmonary embolism]]<br /> *[[Deep vein thrombosis]]<br /> *Hematoma (retroperitoneal, intramuscular)<br /> *Aortic dissection (rarely)<br /> <br /> ====Factitious/Habitual====<br /> *Factitious fever (self-induced)<br /> *Munchausen syndrome / Munchausen by proxy (pediatric)<br /> <br /> ====Miscellaneous====<br /> *Post-surgical/post-procedural inflammation<br /> *[[Gout]]/pseudogout (crystal arthropathy)<br /> *Cirrhosis / [[alcoholic hepatitis]]<br /> *Hemolytic anemia<br /> *Transfusion reaction<br /> *[[Tissue necrosis]] (rhabdomyolysis, large hematoma, pancreatitis)<br /> *Hypothalamic dysfunction (central fever)<br /> *Periodic fever of unknown cause (~10-15% of FUO never diagnosed)</div>

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