Definitions for "Hyperemia"
an excess of blood in an area or part of the body
P,S Hyperemia occurs when arterial and arteriolar dilatation produces an increased flow of blood into capillary beds. In other words, hyperemia is an active process. As would be expected, there is increased redness in the affected area. The arterial and arteriolar dilatation is brought about by sympathetic neurogenic mechanisms or the release of vasoactive substances. Cutaneous hyperemia occurs whenever excess body heat must be dissipated, such as in exercise and febrile states. Blushing is another example of hyperemia induced by neurogenic mechanisms. In veterinary medicine, the most common cause of hyperemia is that associated with vasoactive substances released in inflammatory processes.
Excessive presence of blood, usually arterial; and the resultant increase in heat and metabolic rate. Hyperemia can be a pathology, blowing out blood vessels and the like; used here to describe the chronic or subclinical condition of functional vascular excess and excitation.
redness of the eye that may be a common, mild side effect of the prostaglandin analogues