Rash-like injury characteristic of extended time in<unk>  environments.
Form of mechanical abrasion combined with air temperature fluctuations/variations in pockets of air trapped beneath clothing layers
Generally only seen in<unk>  environments
Frequently seen in skiers in Arctic environments due to frequent hip extension which stretches clothing overing the<unk> , necessity of wearing multiple layers of clothes, and copious amounts of heat locally produced by such exercise
Polar thigh
Allergic reaction
Finger 
Infection 
Distal phalanx 
Generalized
Proximal phalanx 
Hypothermia