Stress because you tighten up. Make a fist right now and you will see your veins tighten. that's because you are stretching the vein and it applies pressure to the below muscle making it visible.
Prolonged exposure to high blood sugar causes the veins to harden.
Sclerotherapy is a treatment of injecting a solution to harden the veins.
Dehidration is a major cause in sunken veins.
Varicos veins, more commonly referred to as spider veins, can have several different causes. Pregnancy, weight gain, and standing for several hours each day are just a few causes.
what causes broken vains in your face
There are many possible causes of raised veins on hands. Generally is caused by the relaxing and thinning of the skin due to age. It can also be caused by a restriction of blood vessels in the hand.
Chemical reaction of lime and dehydrated gypsum with water.
its the calcum salts that build up soft tissue and causes it to harden
Venous insufficiency is a condition in which blood pools in the vein because the valves have become incompetent.
Veins as seen through tissue are normally sort of a greenish-blue color.
what causes this to enlarge in the liver
Inflamation