Posted by Larry Hoover on February 6, 2006, at 12:33:38
In reply to Re: Leg Warmers » alexandra_k, posted by LegWarmers on January 20, 2006, at 11:44:40
> > > I think they can lol
> >
> > hmm. i've been wondering that one for a while... maybe it is the nerves around the bones? but then how come marrow transplants are supposed to be really painful? maybe you can feel inside bone after all?
>
>
> Because the medication/injection that they give to get the marrow to come out causes the pain, not the marrow extraction itself.I hope everybody posting to this thread is feeling better now. I've seen two people describing classic symptoms of sinus infection.
Bones most certainly do have nerves running through them, and in the marrow. They are particularly sensitive to pressure. The nerves tend to follow the course of blood vessels, so they may arise from a distant connection to the spinal cord, rather than from a local one. That's why bone marrow procedures are so painful. A local anaesthetic will numb the tissue outside the bone, but the nerve in the bone is from somewhere else, and it will not be affected by the anaesthetic. The only practical way to numb the bone, too, would be a general.
Aching bones feelings tend to come from systemic inflammatory processes. There just isn't much room for inflammation in bone, and the nerve gets squeezed when the immune system is activated significantly.
The achy bones in the face thing is due to pressure from inflammation in closed spaces, the sinuses. Sinus infections can be viral, bacterial, or fungal, but only the latter two can really be treated. OTC sinus remedies focus on trying to bring down the inflammation, which relieves the pain.
Lar
poster:Larry Hoover
thread:595153
URL: http://www.dr-bob.org/babble/health/20060202/msgs/606894.html