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1,026 Possible Causes for Leukopenia, Upper Respiratory Infection

  • Influenza

    Influenza A(H1N1)pdm09 virus infection was identified in upper respiratory tract specimens from both patients, and neuroimaging revealed bilateral inflammatory lesions, consistent[] respiratory infection symptoms or allergic rhinitis.[] Acute febrile illness is generally limited to upper respiratory symptoms and several constitutional symptoms, including headache, lethargy, and myalgia.[]

  • Primary Myelofibrosis

    We found that fibrosis grade 2 and greater on a 0-3 scale was associated with clinical characteristics indicative of a more advanced disease, such as anemia, leukopenia, thrombocytopenia[] Disturbances in leukopoiesis render the patient prone to infections, e.g., to upper respiratory infection and urinary tract infection.[] Compared with pre-PMF, overt PMF was enriched in patients with anemia, thrombocytopenia, leukopenia, higher blast count, symptoms, large splenomegaly, and unfavorable karyotype[]

  • Paroxysmal Nocturnal Hemoglobinuria

    CBC showed leukopenia (WBC 2.9 x 103 /µL) with neutropenia (segmented neutrophils 48%), macrocytic anemia (Hgb 6.1 g/dL, hematocrit 20%, MCV,113 fL) and thrombocytopenia ([] The most frequently reported adverse reactions in aHUS single arm prospective trials ( 20%) are: headache, diarrhea, hypertension, upper respiratory infection, abdominal pain[] Leukopenia, thrombocytopenia, arterial and venous thromboses, and episodic crises are common. Diagnosis requires flow cytometry.[]

  • Isovaleric Acidemia

    This report concerns an infant who presented at 10 days of age because of lethargy, poor feeding, hypothermia, cholestasis, and thrombocytopenia, leukopenia, and profound[] A three-year-old male patient, with mild psychomotor retardation, had recurrent bouts of acute encephalopathy and pancytopenia after episodes of upper respiratory infection[] Global developmental delay MedGen UID: 892935 • Concept ID: C4020875 • Pathologic Function Leukopenia MedGen UID: 6073 • Concept ID: C0023530 • Disease or Syndrome A decrease[]

  • Adenovirus Infection

    Upper respiratory infections can range from mild cold symptoms to flu-like symptoms.[] Childhood infections In children, adenoviruses most often cause acute upper respiratory infections with fever and runny nose.[] The signs and symptoms of adenoviral infections depend on the type of adenovirus and the part of the body affected. Respiratory symptoms are most common.[]

  • Severe Aplastic Anemia

    Symptoms result from anemia, thrombocytopenia (petechiae, bleeding), or leukopenia (infections).[] […] cell count (anemia) can cause: Fatigue Pallor (paleness) Rapid heart rate Shortness of breath with exercise Weakness Lightheadedness upon standing Low white cell count (leukopenia[] […] on the skin (petechiae) Frequent or severe infections (less common) Exams and Tests Blood tests will show: Low red blood cell count (anemia) Low white blood cell count (leukopenia[]

  • Atypical Hemolytic Uremic Syndrome

    After three doses, the child developed leukopenia (total leukocyte count 3500/mm 3 and absolute neutrophil count 800/mm 3 ).[] The most frequently reported adverse reactions in aHUS single arm prospective trials ( 20%) are: headache, diarrhea, hypertension, upper respiratory infection, abdominal pain[] Nevertheless, the prodromal phase may also be characterized by an upper respiratory infection or influenza, or may not be observed at all.[]

  • Congenital Acquired Immune Deficiency Syndrome

    They both can present with a combination of symptoms including fevers, rashes, weight loss, joint pain, anemia, leukopenia, proteinuria, vasculitis, etc.[] respiratory tract infection, sinusitis, or otitis media.[] Stage 2: Loss of weight ( 10% of body weight); minor mucocutaneous infections; herpes zoster and recurrent upper respiratory tract infections (URTI).[]

  • LIG4 Syndrome

    […] combined immunodeficiency, a genetically and clinically heterogeneous group of rare congenital disorders characterized by impairment of both humoral and cell-mediated immunity, leukopenia[] Recurrent upper respiratory infection (URI) history was striking. Serum IgM was low for age.[] […] mutation was developmentally and clinically normal with no microcephaly, but developed acute lymphoblastic leukaemia and following chemotherapy treatment developed profound leukopenia[]

  • Influenza B Virus Infection

    A complete blood count (CBC) mainly shows leukopenia, whereas creatine kinase (CK) levels might also be elevated if myalgia is reported.[] […] but more myositis and respiratory tract infections, particularly upper respiratory tract infections.[] In healthy adolescents and adults, influenza A and B viruses primarily cause a self-limited upper respiratory tract infection characterized by abrupt onset of fever and chills[]

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