In album: veins
It is common for injury to the veins (Bruises on veins), especially after a minor injury, but many times it also occurs when it can be a sign of a serious problem. Normally, scratch that appears after light injury or pressure is harmless and heals in a week or two. However, if the bruising evolves for no apparent reason, it is unusually large or persists for a long time, it may be a concern.