put them under running warm water.
Your hands might swell up at high altitude due to frostbite. You can read more about frostbite at the link provided.
Probably because of frostbite
Frostbite
Yes it is very possible , if you are have sweaty hands and feet you can get it in your hands easily. Regular athlete's foot cream can get rid of it , but make sure not to put your hands everywhere or you will get it in many more places or give it to other people.
Put the finger in water, temperature 100 - 104F.
dhyan chand
The most common symptoms of Raynad's phenomenon are often cold feet and hands and can often be mixed up with frostbite. But it should be known that Raynad's phenomenon is not the same as frostbite!
The disposable and portable product Hot Hands is used to keep hands warm in extreme conditions. These conditions are usually related to being in very cold climates where hands can get cold or develop frostbite.
Not hot water, but water temperature 100 - 104F.
gloves protect peoples' hands from getting frostbite and hypothermia
do not care
Depends on why your hands are red. Red hands could be a symptom of: -heart problems -frostbite (place hands in warm water [test w/ elbow]) -burn (place hands in cool water) -circulation problems (loosen your bracelet/watch)