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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Does A Dark Vein On Leg Below The Knee Indicate?

I have noticed about a month ago, a dark vein at the back of my 6yr old son s leg, just below his knee joint, right at the top of his calf. He has been diagnosed with environmental asthma and is on a daily medication called Singulair. Is this vein normal or could it be a side effect of his asthma meds, or could it be something different all together. Kind regards, Worried Mother
posted on Tue, 5 Aug 2014
Twitter Tue, 16 Sep 2014 Answered on
Twitter Wed, 17 Sep 2014 Last reviewed on
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Pediatrician,  's  Response
Thank you for posting your question.
The location on the leg that you have mentioned does harbour a major vein. It is most likely that this prominence that you have noticed is a normal occurrence.
Also, the drug that you have mentioned is not known to cause any such side effects.
Having said that,I would suggest you keep a watch for appearance of any new symptoms like swelling of the legs or appearance of new prominant veins. If so, consulting a doctor would be necessary.
If you have any more doubts regarding this case, do write back.
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What Does A Dark Vein On Leg Below The Knee Indicate?

Thank you for posting your question. The location on the leg that you have mentioned does harbour a major vein. It is most likely that this prominence that you have noticed is a normal occurrence. Also, the drug that you have mentioned is not known to cause any such side effects. Having said that,I would suggest you keep a watch for appearance of any new symptoms like swelling of the legs or appearance of new prominant veins. If so, consulting a doctor would be necessary. If you have any more doubts regarding this case, do write back.