Numb Leg While Running

by Sarah

I recently started running. I haven't run for a few days now but I have noticed that my left leg is going numb. Is this a result of the running or could this be more serious? My left inner calf tingles and my left leg looks slightly bigger than my right leg, it doesn't hurt though. What's wrong with my leg?

Answer by Dominique:

Hi Sarah,
Thanks for the question about your numb leg. Numbness, pins and needles etc usually happen due to poor blood circulation. This can happen due to low blood pressure or some kind of blockage.

People often get pins and needles in their feet for example when they have tied up the laces of their running shoes a bit too tight. You also get it when you have been sitting in an akward position with your legs all tangled up for a while for example.

Considering you haven't run for a few days, I would doubt that your running would have anything to do with this.

Not to scare you, and it may be harmless, but I would get this checked out by a doctor. Your symptoms point to something called "deep vein thrombosis" also known as "economy class syndrome". It is called that way because you can develop this when you sit in the same position for a long period of time.

If it is DVT then you may need blood thinning medicines to remove the blockage from your blood (not using the right technical terms, but explaining it in simple terms).

Hope this helps.

Join in and write your own page! It's easy to do. How? Simply click here to return to Running Injury Helpline.

Like this page:

Share this page:

Like this site:

[?] Subscribe To This Site

follow us in feedly
Add to My Yahoo!


  • Beginner Running Tips

    Are you a beginning runner? Then this is your best starting point. Many tips and running programs on offer, dedicated to you.

  • Running for Weight Loss

    Aiming to lose a few pounds? Get into the Running for Weight Loss section for tips and advice.

  • Running Training

    The Running Training section of the site has got the most articles. It is constantly getting updated with new tips and information. A must-visit if you are serious about improving your running performance.

  • 5k Running Tips

    The 5k is a great distance to run and train for. The great thing is that you can do it quite often and see big improvements.

  • 10k Running Tips

    The 10k is a real challenge. You need to run fast for an uncomfortably long time! Check out this section if you are strong of mind and legs!

  • Marathon Running Tips

    The marathon is a massive challenge. Proper training is so important! Make sure to check out this section if you have got your mind set on the marathon!

What's New?

  1. Marathon Calculator Page - Three Essential Running Calculators That Help You Conquer Your Marathon

    This marathon calculator page provides you with a set of running calculators that help you conquer your marathon. Calculate your marathon pace, training pace etc.

    Read more

  2. Advanced Marathoning Book Review- If You Want To Do More Than Finishing a Marathon

    Want to run your best marathon? Want to do more than just finishing a marathon. Then Advanced Marathoning is the book for you.

    Read more

  3. Top Fifteen Beginner Jogging Myths

    The top fifteen beginner jogging myths. When you are a beginning runner, you'll hear lots of nonsense about running. This articles dispels some of the most common myths.

    Read more

  4. How Can I Improve My 5 Mile Time?

    I am a 25-year-old female running a 7 minute mile for 5 miles. My time is between 33 to 35 minutes. My question is how can I run a 6 minute mile for 5

    Read more

  5. Returning to Running After a Meniscus Injury

    I have developed a meniscus injury which requires surgery. I run 1/2 and full marathons and haven't been able to run for the past 3 months as I wait

    Read more