Spider veins and varicose veins are easy to diagnose. Your doctor simply looks at the patterns on your legs, feet, or other affected areas. They will also check for swelling, tender spots, ulcers, and changes in skin color. Most spider veins and varicose veins don't need to be treated, unless they result in ulcers, bleeding, and phlebitis, or because you want them removed for cosmetic reasons. If the veins are causing pain, soreness, and muscle fatigue or cramping, there are steps you can take at home to reduce the symptoms.