Q+A: Why these blisters from my new shoes?

Q I’ve bought some new shoes which give me blisters on the inside of the arches on both feet. My previous shoes were fine, and the new pair are designed to offer excellent foot support. So have I just chosen the wrong ones? I’m 12.5st and I run about 25 miles a week.

A Since both your weight and mileage are moderate and you experienced no trouble with your previous shoes, your blisters would certainly appear to be caused by the new ones. These may well offer excellent foot support, but perhaps too much as far as your feet are concerned. Some feet do not need extra support, or may be very flexible and not suitable for a very firm shoe. Shoes which are built for support normally have a firm heel counter (the back of the shoe), and midsole and arch support. The chances are that you have flexible feet which are flattening over an arch support with little or no give, causing pressure and rubbing in the arch, which in turn will cause blistering. If you examine your previous running shoes, you’ll probably find a lower arch profile, which is better suited to your foot type.

It’s difficult to give advice on what shoe you should be wearing without seeing your feet. However, a good rule of thumb is that if a shoe is comfortable, stick with that model. In this case you can probably assume that your new purchase is not the right shoe for your feet.

David Holland, consulting podiatrist