Allergic reaction
Infection (e.g. cellulitis, fungal/bacterial/viral)
Generalized
Hypothermia
Freezing
Frostbite
Non-freezing
Trench foot
Chilblains (Pernio)
Cold panniculitis
Cold urticaria<unk> 
Hypothermia
Frostbite
Trench foot
Chilblains (Pernio)
Cold panniculitis
Cold urticaria<unk>
Polar thigh
Allergic reaction
Finger 
Infection 
Distal phalanx 
Generalized
Proximal phalanx 
Hypothermia