Can you give me more info on sclerotherapy done to their varicose veins?

Vein sclerotherapy: Leg vein sclerotherapy is injection of safe solutions to alter the structure of the cells lining the vein channel surface. Successful result is to destroy malfunctioning veins, sealing them closed so they are absorbed and disappear. Blood detours into the normal veins, improving symptoms, circulation and appearance.

Sclerotherapy: Sclerotherapy is common therapy used to remove spider or varicose veins of the legs, whether for cosmetic or medical reasons. Small needles are inserted into the vein clusters & a drug is injected into them which closes the veins. FDA approved sclerosant drugs are polidocanol & sotradecol. Non FDA approved drugs used worldwide include glycerine & hypertonic saline. Can work for all size veins