- Increased pressure in the leg veins.
- Damage to the leg veins.
- Venous insufficiency.
Varicose veins often run in families. You may be born with defective valves or weak walls in your veins, or you may develop them later in life.
Varicose veins are more common in women than in men. And varicose veins happen more often as people get older.
Less commonly, varicose veins may be a sign of a more serious problem that may sometimes need treatment. These serious problems can include: