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A 21-year-old female asked:

Hi, last thursday found blue veins on the side of my left breast, what could this mean? my period is due in a couple of days.

2 doctor answers3 doctors weighed in
Dr. William Harris
Family Medicine 33 years experience
Mammary veins: This is normal anatomy. You may see more and more blood vessels through your skin as you get older, and it is no problem. (full human adult maturity age is 25). Of course, because your system may be going through a hormonal cycle, these veins may be a bit more prominent, but don't be surprised if they are visible there for the rest of your life starting in a few more years...
Dr. John Landi
Phlebology 47 years experience
Normal finding: I am amazed about how often I have women ask me about the veins on their breast. Occasionally they are spider veins but mostly they are blue veins. These are almost always normal findings and normal variations of chest veins. They tend to be more pronounced in fair skinned females and they may be related to hereditary factors or even pregnancies. No treatment is necessary unless for cosmetics.

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Last updated Aug 9, 2017

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