Spider veins and varicose veins affect nearly 40 million Americans. You have about a 50% chance that one or the other or both pop will up on your skin. And when they do, you are going to have questions. Are spider veins and varicose veins the same thing? How do you tell the difference? Does one cause the other? Are they dangerous? Are they permanent? Will they go away? Can they be managed? Are there treatments available? We know that you've got a lot of questions about spider veins vs varicose veins. Here's great news- we've got answers!