Spider veins — those fine, thread-like red or blue lines just beneath the skin — are one of the most common concerns we see, and one of the most misunderstood. Here’s what actually causes them and what can be done.
What causes spider veins
Like varicose veins, spider veins result from small veins losing their ability to move blood efficiently, often due to genetics, hormonal changes, prolonged standing, or sun exposure (particularly on the face). Pregnancy is also a common trigger.
Symptoms to watch for
Most spider veins are purely cosmetic and painless, though some patients notice mild itching or a burning sensation directly over the affected area. Unlike varicose veins, they typically don’t cause aching or swelling.
Treatment options
Sclerotherapy is the standard treatment — a solution injected directly into the vein causes it to collapse and fade over the following weeks, often requiring more than one session for the best result. It’s a quick, in-office procedure with minimal downtime.
Can spider veins be prevented?
Not entirely, especially if you’re genetically predisposed, but regular movement, compression stockings during long periods of standing, and sun protection can reduce your risk and slow new ones from forming.
