Thread veins on legs, often referred to as spider veins, are damaged or swollen veins that typically appear as thin, red, purple, or green lines resembling webs. These veins form when the small valves inside the veins stop functioning properly, causing blood to pool and the veins to swell.

The causes of thread veins on legs vary and can include genetics, prolonged standing, or increased pressure on the veins. While usually harmless, they can sometimes lead to discomfort or affect confidence, prompting many to seek thread vein removal on legs to enhance their appearance. Understanding thread veins on legs prevention, such as regular exercise and avoiding long periods of standing, can help minimise their development.