hyperviscosity

noun

hy·​per·​vis·​cos·​i·​ty ˌhī-pər-vi-ˈskä-sə-tē 

: excessive viscosity or thickness

especially : an abnormal increase in the viscosity of blood

The patient had no symptoms suggestive of hyperviscosity, including visual changes, vertigo, ataxia, and changes in mental status.

—Alexander Turchin et al.

hyperviscous

ˌhī-pər-ˈvi-skəs 

adjective

hyperviscous fluids

Word History

First Known Use

1921, in the meaning defined above

Medical Definition

hyperviscosity

noun

hy·​per·​vis·​cos·​i·​ty -vis-ˈkäs-ət-ē 

plural hyperviscosities

: excessive viscosity or thickness

especially : an abnormal increase in the viscosity of blood

As erythrocytosis due to arterial desaturation develops … symptoms of hyperviscosity (visual disturbances, fatigue, headache, dizziness, and paresthesias) may appear.

—M. Elizabeth Brickner et al.