Diseases Causing Low Platelets (Thrombocytopenia)
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Dengue fever
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Leukemia & other blood cancers
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Aplastic anemia
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HIV/AIDS
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Hepatitis C
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Systemic lupus erythematosus (SLE)
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Sepsis (severe infection)
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Idiopathic thrombocytopenic purpura (ITP)
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Drug-induced thrombocytopenia (e.g., chemotherapy, heparin-induced)
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Bone marrow failure syndromes
Diseases Causing High Platelets (Thrombocytosis)
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Essential thrombocythemia (bone marrow disorder)
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Polycythemia vera
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Chronic myeloid leukemia (CML)
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Iron deficiency anemia
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Post-splenectomy (after spleen removal)
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Tuberculosis & chronic infections
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Inflammatory diseases (e.g., rheumatoid arthritis, inflammatory bowel disease)
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Cancer-related thrombocytosis (lung, gastrointestinal, ovarian, etc.)