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“thermoalgesia”
High sensibility to heat; pain caused by a slight degree of heat: When the ligaments, tendons, and muscles swell due to heat or hot weather, it is referred to as thermalgesia. A person is dehydrated and the joints lose water or fluids.
Thermalgesia is a condition in which the application of heat produces pain.
Pain caused by a slight degree of heat: Heat pain, or thermoalgesia, can be caused by muscle spasms, perhaps originating by a person's body being overheated and needing electrolytes, in which it is important to stop the activity, rest in a cool and shady spot, and drink something nice, but nothing alcoholic!
As a fever indicates that the body is fighting infection, pain has its purpose in reporting injury or internal problems. Unfortunately, pain is not a reliable indicator, and it is of limited help to a physician in forming an accurate diagnosis.
The perception of a pain’s very source may be incorrect. The tooth that one points out as the one that hurts may not be the one that’s abscessed.
That pain in a person’s arm may not be caused by a strain or injury to that area, but it could be the result of a problem in his/her heart or other organ.
These are examples of a phenomenon known as "referred pain".