Many of these factors that increase risk will increase the pressure on the lower extremities and venus system. For instance increased weight gain, pregnancy and standing or sitting for long periods of time will all increase the risk of valvular damage in the veins.
A common form of treatment for spider veins is sclerotherapy. This is a procedure done in the office where the spider veins are injected with a solution that causes them to collapse, clot and eventually become reabsorbed. This procedure is not usually done for cosmetic reasons but because there are other associated symptoms. Many people will require several different sessions to receive the maximum benefit.