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Hot aches
The hot aches (also known among North American ice climbers as the ''screaming barfies'') is a very painful physical reaction to the cold, most often felt in the hands or feet. When exposed to the cold, blood stops flowing normally to the extremities. Later once you warm up, the blood begins to flow again; this causes the pain known as the hot aches.
==Causes==
Being exposed to cold areas for an extended period of time can lead to hot aches afterwards.
Poor circulation may also be a cause of hot aches. Circulation is highly affected by the reaction of sympathetic nervous system, which is sensitive to the cold. Accordingly, peripheral circulation is withdrawn to protect the organs at the sacrifice of the limbs.〔cite web|last=Kirkpatrick|first=Andy|title=Cold Hands|url=http://andy-kirkpatrick.com/articles/view/cold_hands|accessdate=23 May 2013〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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