Thread Veins
Sometimes known as spider or broken veins, thread veins are small prominent veins that appear just below your skin surface, commonly on your face and legs. They tend to branch and give a spidery sort of pattern hence their common name. Thread veins are completely harmless but can be cosmetically displeasing.
A number of factors contribute to the appearance of thread veins on your skin including: genetic inheritance, ageing, sedentary lifestyle, sun-damage, obesity, alcohol, smoking and hormonal changes