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.
1 These are marketed specifically to get rid of corns, and can be found in most drug stores. 2  Do not attempt to peel away the skin. This will only damage it further, and create a lot more pain.  Lamb's wool, moleskin or cotton pads can help cushion soft corns between your toes.