Do i need to be worried about a superficial vein bursting?

Usually not: One tiny superficial vein bursting should clear up like a bruise would clear up.

Can happen: Spider veins (telangiectasia) in the lower leg can spontaneously burst/bleed. Often happens when standing in the shower or in hot weather when veins dilate, and the thin skin overlying gives way, and bleeding often is described as "shooting out." don't go to er; lying down with legs elevated and pressure dressing over bleeding site, use of ice pack will control bleeding. Then see phlebologist.

Perhaps: You need to show this to a physician. Occasionally some individuals have capilar fragility that might represent lack of vitamins. Could be just traumatic or you might be taking blood thinners. There are too many possibilities.

Veins rarely burst.: There are 3 types of superficial veins-varicose, spiders and reticular (blue). Varicose veins could bleed following trauma to them but will rarely spontaneously bleed. Spider veins will not bleed unless they are long standing and located over the ankle and skin. In order for these to bleed, scabs form over them and rupture. This is primarily in older patients. Reticular veins do not bleed.