reactive hyperaemia

Transient increase in organ blood flow that occurs following a brief period of ischemia (e.g. arterial occlusion).

It often occurs as a consequence of Raynaud's phenomenon, where the vasospasm in the vasculature leads to ischaemia and necrosis of tissue and thus a subsequent increase in blood flow to remove the waste products and clear up cell debris.

Raynaud's phenomenon is a condition resulting in discoloration of the fingers and/or the toes after exposure to changes in temperature (cold or hot) or emotional events.