http://www.thewalkingsite.com/faq.htmlWhy do my legs itch when I walk?
There are several possible causes of itchy legs while walking. This seems to be a common complaint in new walkers and it has been suggested that the itching may be due to poor circulation. If this is the case the itching normally subsides as your body gets more activity.
Of course the most common cause of itchy legs is dry skin. In the winter dry skin can really be a problem. You may itch when you're not exercising, but sweating intensifies the problem. Simply apply a moisturizer to your legs before exercising. Use products that are free of perfumes and dyes.
Some soaps, detergents, fabrics, etc. can cause a slight allergic reaction. Once again you may not really notice this until you are walking and sweating. If you are using a new product (bath soap, lotion, laundry detergent, etc) that could be the culprit. Also be sure you are wearing breathable fabrics to reduce chances of a heat rash.
If the itching persists, you develop a rash, or have additional symptoms you should contact a physician.
http://www.wisegeek.com/why-do-my-legs-get...when-i-walk.htmSometimes people experience leg itching when they walk, exercise, or are exposed to heat. There are a number of reasons for legs to get itchy as a result of walking; if this is a recurring problem, you may want to see a doctor. When your legs get itchy, take note of the conditions of the itching, like the type of exercise you are engaged in, the temperature, and the weather. These clues can help a doctor figure out the cause of the problem.
The most common reason for itchy legs while walking is cholinergic urticaria, a fancy term for an elevation in body temperature which causes your body to react with itching, warm skin, and bumpy hives. If your legs get itchy in warm weather, saunas, and other warm conditions, you may have this condition, but you should talk to a doctor to be sure. The use of antihistamines can help to control the reaction and make you more comfortable.