Varicose veins can affect anyone, but they are most common in women and older adults.
What causes varicose veins?
Varicose veins are caused by weakened valves and walls in the veins, which allow blood to flow backward and pool in the veins. This can cause the veins to become enlarged and twisted. Varicose veins are usually not painful but can cause achy or heavy legs, cramping, and swelling. If left untreated, they can also lead to skin ulcers and blood clots.