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The reasons for the increase and decrease of red blood cells

Medical expert of the article

Hematologist, oncohematologist
, medical expert
Last reviewed: 19.10.2021

Diseases and conditions accompanied by an increase in the number of erythrocytes in the blood

The main pathogenetic groups

Clinical forms

Absolute erythrocytosis (increased production of erythrocytes)

Primary

Secondary (symptomatic):

  • caused by hypoxia;
  • associated with increased production of erythropoietin
  • associated with excess corticosteroids or androgens in the body

Relative erythrocytosis

Mixed erythrocytosis due to blood clotting and placental transfusion

Erythremia

Diseases of the lungs, heart defects, the presence of abnormal hemoglobins, increased physical activity, stay at high altitudes, obesity

Cancer of the kidney parenchyma, hydronephrosis and polycystic kidney, cancer of the liver parenchyma, benign family erythrocytosis

Cushing's syndrome.

Pheochromocytoma, hyperaldosteronism

Dehydration, emotional stress, alcoholism, smoking

Physiological erythrocytosis of newborns


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