An injured blood vessel can affect the flow of blood especially in the upper extremities including the hands and fingers.
A vascular disorder can result from a blunt trauma such as a cut or significant injury. Spasming of the hands occurs in the fingers in a condition called Raynaud’s Disease. This also influences the flow of blood and actually cuts it off.
Aneurysms are known as a popping of a blood vessel due to expansion. This can lead to other problematic symptoms such as numbness, sensitivity and pain.
In circumstances where a small artery or vein has to carry an unusually excessive amount of blood, malformation can occur with physical consequences including pain.
All of these are different causes giving rise to vascular disorders which affect the flow of blood in the human body and especially the hands.