When to Worry About Veins That Appear Out of Nowhere
Common causes include excessive exercise, aging, hot temperatures, tight clothing, genetics, sun exposure, and being overweight. In some cases, bulging veins may be harmless, but if they appear with discoloration, it’s best to consult a healthcare provider.
Veins bulge when blood pools in weakened or damaged veins, rather than flowing smoothly back to the heart. This often results in varicose veins—swollen, twisted veins that typically appear on the legs but can also show up on the arms.
While visible veins are usually a cosmetic or temporary issue, a sudden or unexplained change might warrant a closer look. Some medical conditions that can cause more prominent veins include:
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