What causes spider veins to be visible?
These unwanted blood vessels often occur as an inherited tendency, and may be part of the aging process. Long periods of standing or sitting, trauma to the leg (leg veins) from blows or falls, pregnancy, birth control pills, and hormone replacement therapy are all factors that can be involved. Exercise and normal weight maintenance may help prevent the onslaught of spider veins. Is Sclerotherapy safe? Sclerotherapy is a safe procedure with few significant risks. Less than 5% of patients experience even minor adverse effects. The most common complication is the development of brownish pigment in the treated area, similar to a freckle, which usually disappears within two to six months. If the veins are unusually weak, there may be some temporary bruising around the injection site. Patients may develop a tiny scab at the injection site if any of the solution escapes from the blood vessels. The scab is treated with an antibiotic ointment until it clears. There is little risk of infection o