What You Could Learn From Bulging Veins Although they aren’t always a warning sign, bulging veins can occasionally be a sign of a more serious medical condition. Recognizing possible health issues requires an understanding of why veins become more noticeable. Excessive exercise, aging, hot weather, tight clothing, genetics, sun exposure, and being overweight are common causes. Bulging veins can be innocuous in certain situations, but it’s best to see a doctor if they show signs of discoloration. When blood pools in weak or damaged veins instead of returning to the heart smoothly, veins bulge. Varicose veins—swollen, twisted veins that usually...
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