Shaking with a fever

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Offline DoctorBeaver

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Shaking with a fever
« on: 04/05/2007 13:33:37 »
I've had flu & a non-descript fever I caught in Africa and both made me shake. Why does that happen?
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Offline iko

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Shaking with a fever
« Reply #1 on: 04/05/2007 21:07:04 »
Hi DoctorBeaver,

I've had flu & a non-descript fever I caught in Africa and both made me shake. Why does that happen?

"caught in Africa" makes anyone suggest malaria as a cause.
Maybe you want to know how fever and shivers are produced.
I can just tell you shortly that infectious agents stimulate production of special short and long range 'messangers' that switch fever on.
Produced by immune cells mainly, they are called cytokines, interferons and so on...
You may calibrate your question better, I think.

ikod  [???]
« Last Edit: 04/05/2007 23:31:41 by iko »

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Offline chris

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Shaking with a fever
« Reply #2 on: 06/05/2007 22:25:59 »
This violent shivering is called a rigor. It occurs because the inflammatory response (which is triggered by whatever infection the body is fighting) causes the hypothalamus, which is in the base of the brain and contains the body's thermostat, to change its set point upwards. The aim is to boost body temperature by triggering the mechanisms that usually kick in to warm us up when we are too cold. This includes raised metabolic rate, increased brown fat activity (this is thermogenic) and shivering, because increased body temperature has been shown to aid white blood cells in mobilising to fight infection and possibly make the body less hospitable for the invader.

So, because the hypothalamus is fooled into thinking we are too cold it switches on these heat-saving and heat-generating mechanisms, including violent shivering - or rigors.


Chris
I never forget a face, but in your case I'll make an exception - Groucho Marx

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Offline DoctorBeaver

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Shaking with a fever
« Reply #3 on: 07/05/2007 15:24:35 »
Thanks Chris. I'd assumed it was caused by some kind of toxic reaction in the muscles.

Iko - no, it wasn't malaria.
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Offline JimBob

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Shaking with a fever
« Reply #4 on: 07/05/2007 16:29:26 »
Black Water Fever?

shame, shame, shame

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Offline DoctorBeaver

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Shaking with a fever
« Reply #5 on: 12/05/2007 18:41:45 »
I caught it on a Saturday night, if that helps  [:D]
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Offline neilep

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Shaking with a fever
« Reply #6 on: 12/05/2007 19:56:43 »
I've had flu & a non-descript fever I caught in Africa and both made me shake. Why does that happen?




Wishing you better !!
Men are the same as women, just inside out !

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Offline Karen W.

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Shaking with a fever
« Reply #7 on: 12/05/2007 20:03:09 »
I caught it on a Saturday night, if that helps  [:D]

Sorry your sick Doc! I hope you feel better soon.

"Life is not measured by the number of Breaths we take, but by the moments that take our breath away."

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Offline DoctorBeaver

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Shaking with a fever
« Reply #8 on: 14/05/2007 11:09:19 »
Everyone's favourite rodent is back on form & tickedy-boo!  [8)]
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paul.fr

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Shaking with a fever
« Reply #9 on: 14/05/2007 11:35:37 »
Everyone's favourite rodent is back on form & tickedy-boo!  [8)]

shy face! the Doc!!!

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Offline DoctorBeaver

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Shaking with a fever
« Reply #10 on: 14/05/2007 13:03:53 »
Oh yes, I'm very shy. Very modest & humble too  [:D]
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