Do you have small veins that you can see on your face or legs that can look like tree branches or spider webs? Or bruise-like spots on your nose, cheeks or chin? When your skin is injured or irritated the tentacle-like veins just beneath the surface of the skin become visible because they have been dilated or expanded. When this happens too quickly the walls of the muscle tear and bleed. If this happens again and again, it can leave the capillaries permanently dilated, giving you visible signs on your face or legs — spider veins that are usually red or blue in colour.