Causes of Polycythemia

Causes of Polycythemia

Key Takeaways Polycythemia means an abnormally high red blood cell count, reflected by raised hemoglobin and hematocrit on a full blood count. Classification ▾: There are three types; primary (polycythemia vera, driven by a JAK2 mutation), secondary (driven by...
Neutropenia

Neutropenia

Key Takeaways Neutropenia is a quantitative deficiency of neutrophils, crucial for the innate immune system. Diagnosis relies on the absolute neutrophil count (ANC), classified by severity (mild, moderate, severe) and duration (acute, chronic). Causes ▾:...
Infectious Mononucleosis (Mono)

Infectious Mononucleosis (Mono)

Key Takeaways Infectious mononucleosis is an acute viral illness (primarily EBV) with classic triad: pharyngitis, fever, lymphadenopathy. Epidemiology ▾: Common in adolescents/young adults, spread globally, primarily via saliva. Causes ▾: Primarily...
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