Source:http://linkedlifedata.com/resource/umls/id/C0020452
MSH: 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).,NCI: The presence of an increased amount of blood in a part or organ; engorgement.,NCI: The presence of an increased amount of blood in a part or organ; engorgement.