Ventilation-perfusion (V/Q) scan is a specialized test that uses a radioactive substance to show the parts of the lungs that are getting oxygen (ventilation scan) and getting blood flow (perfusion scan) to see if there are portions of the lungs with differences between ventilation and perfusion.
Moleskin may be the first commercial blister treatment and prevention product I remember using. My dad always kept some moleskin in his pack and at the first complaint of any hot or sore feet, out it would come.
Narrow shoes can cause blisters on the big toe and little toe. A shallow toe box can lead to blisters on the tops of the toes, while loose shoes can create blisters on the tips of the toes. * When trying on shoes, be sure to wear the same socks, insoles, or orthotics that you wear when training or racing.