MeSH definition : The presence of an increased amount of blood in a body part or an organ leading to
congestion or engorgement of blood vessels. Hyperemia can be due to increase of blood
flow into the area (active or arterial), or due to obstruction of outflow of blood
from the area (passive or venous).;
The presence of an increased amount of blood in a body part or an organ leading to
congestion or engorgement of blood vessels. Hyperemia can be due to increase of blood
flow into the area (active or arterial), or due to obstruction of outflow of blood
from the area (passive or venous).