- Spider veins or telangiectasias are small varicose veins located just beneath the skin. In many cases, spider veins are of a cosmetic concern only. In other cases, they may in fact be related to an underlying medical problem known as venous insufficiency or reflux (backwards flow of blood in the veins). In either situation, symptoms associated with spider veins range from itching or a dull ache to throbbing pain and bleeding.
- Varicose veins are superficial veins that have enlarged due to increased pressure in your veins caused by incompetent, or leaking, valves that are much larger than spider veins. Varicose veins may cause an aching feeling in your legs or may result in pain, swelling, skin discoloration or even ulcers. They may be related to an underlying medical problem known as venous insufficiency or reflux (backwards blood flow in the veins). The disease is typically progressive and can eventually involve the entire saphenous vein (the vein that runs under your skin along your calf and thigh) as well as many of its branches if it is not treated.