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Lymphocytopenia

Last edited: 4/14/2026

Overview

Lymphocytopenia refers to a condition characterized by a decreased number of lymphocytes in the peripheral blood, often indicative of immunosuppression or underlying disease states 6.

Diagnosis

  • Key Diagnostic Criteria: Low absolute lymphocyte count (typically <1.0 × 10^9/L) 6.
  • Recommended Tests: Complete blood count (CBC) with differential 6.
  • Grading: Severity may correlate with clinical context and lymphocyte count thresholds 6.
  • Management

  • First-Line Treatments: Address underlying cause (e.g., infection, malignancy, autoimmune disorders) 6.
  • Adjunctive Treatments: Immunoglobulin therapy in severe cases 6.
  • Specific Drug Classes: No specific dosing mentioned in provided abstracts 6.
  • Special Populations

  • Pregnancy: No specific guidance provided in the abstracts 12345.
  • Pediatrics: No specific guidance provided in the abstracts 12345.
  • Elderly: Increased vulnerability to infections; management focuses on supportive care and underlying condition treatment 4.
  • Comorbidities: Management tailored to comorbid conditions; emphasis on infection prevention and control 4.
  • Key Recommendations

  • Identify and treat the underlying cause of lymphocytopenia to restore immune function (Evidence: Moderate) 6.
  • Monitor patients closely for signs of infection due to increased susceptibility, especially in elderly populations (Evidence: Expert opinion) 4.
  • Implement infection control measures in settings with vulnerable populations, such as nursing homes, to mitigate risks associated with lymphocytopenia (Evidence: Expert opinion) 4.
  • References

    1 Darwin KH. Sci-Con. EMBO reports 2022. link 2 Clark K. 2021: a veterinary year in review. The Veterinary record 2022. link 3 Smith DR. After 2 years of a pandemic, students are struggling to find strong reference letters. EMBO reports 2022. link 4 Hazif-Thomas C, Thomas P. [Accommodation facility for dependent elderly people, ensuring relational proximity after health emergencies]. Soins. Gerontologie 2020. link 5 Shirodkar AL, De Silva I, Verma S, Anderson S, Dickerson P, Walsh F et al.. Personal Protective Equipment (PPE) use among emergency eye care professionals in the UK during the COVID19 pandemic. Eye (London, England) 2020. link 6 Oravec C, Kmety E. Antilymphoid activity of leptospiral exoproducts. Neoplasma 1978. link

    Original source

    1. [1]
      Sci-Con.Darwin KH EMBO reports (2022)
    2. [2]
      2021: a veterinary year in review.Clark K The Veterinary record (2022)
    3. [3]
    4. [4]
    5. [5]
      Personal Protective Equipment (PPE) use among emergency eye care professionals in the UK during the COVID19 pandemic.Shirodkar AL, De Silva I, Verma S, Anderson S, Dickerson P, Walsh F et al. Eye (London, England) (2020)
    6. [6]
      Antilymphoid activity of leptospiral exoproducts.Oravec C, Kmety E Neoplasma (1978)

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