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Why we feel cold during fever,even body temperature is high?

Since the average human body temperature is 98.6 F, how come touching objects not even that temp feel too hot?

  • A day or an object that is just under 100 F is very hot even thought that is the internal body temperature. Why?

  • Answer:

    For one thing, our extremities are several degrees cooler than our core temperatures of 98.6 F, or 37 C. Our skin is on the outside of the body, which is even cooler. Since it is exposed to the ambient air, our skin tends to be much cooler than the inside of our bodies by many degrees, so our pain and temperature sensors are reacting to a warm stimulus that is ten, twenty or even more degrees warmer than the surface of our fingers, and a day of 85 degrees F feels hot because our outer shell temperature is cooler. Also, the more humidity in the air, the hotter the actual temperature feels because water in the air prevents our skin from normal cooling by evaporation of sweat. This is called the Heat Index, and it is why a day with an actual temperature of 85 degrees can feel like it's in the upper 90's on a very humid day, but that same day can feel balmy on a day with low humidity.

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you have cold receptors in your skin which react to lower temperatures and hot receptor which react to hot temperatures. Those receptors do no perceive an absolute temperature but a relative temperature. If you live in a temperate climate you might think it's hot in spring at 65 degree, but in summer, if it's been 80s for days 64 degrees will feel cold, since your temperature sensors adapted. You can test this by putting one hand into a bucket with rather warm water (don't make it warmer than you can stand), the other hand into a bucket or bowl with cold water. Leave the hands in the water for a few minutes. Then mix both bowls of water and stick both of your hands into that water. You'll notice that the hand which was in hot water thinks the water is cool, while the had which was in cold water thinks the water is warm. This is called sensory adaptation.

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