Sclerotherapy: A chemical solution is injected to close off small varicose and spider veins (Cleveland Clinic). Varicose veins are twisted veins that are swollen and often seem blue or dark purple. These happen if the valves with your veins don't operate effectively, which could then produce blood pooling and vein https://thesocialintro.com/story6581332/considerations-to-know-about-varicose-veins-treatment