Do lesions in the brain cause noise? I have a constant buzzing whistling noise in either my head or my ear cant quite place it, drives me mad. Its not hugely noisy just there buzzing away.
Yesterday I thought i would take the dogs for a quick walk and I had the weirdest buzzing whip across my head from oneside to the other I grabbed my head it was the weirdest thing.
Perhaps I am just cracking up LOL.
First, Dr. Kantor said "MS" lesions can cause pain. "Brain" lesions are only one place where MS can cause lesions. Typically you think of pain and paresthesias as being from spinal lesions and brainstem lesions.
But, lesions in the brain also mess around with the overall pathways of the snsory pain nerves. There would be no reason to think that pain or a paresthesia couldn't arise from some MS lesions.
Sho brings up a good point about the theory of "gating" in MS. Definitely lesions in the brain could affect the gating reponse in the cortex.
Quix
Good question! Since pain is really a kind of sensation, I wonder if you can get it like a paresthesia so the problem could start anywhere the signal gets messed up, either before or after it hits the brain??? I really don't know, though, so I hope someone else does.
Here are a couple interesting articles on MS and different types of pain:
http://www.msrc.co.uk/index.cfm?fuseaction=show&pageid=752
This says there are three types of MS pain:
1. Musculoskeletal Pain (from weakness, spasticity or imbalance so I guess indirectly caused by MS)
2. Paroxysmal Pains (that come and go). Here they give the examples of trigeminal neuralgia and L'hermittes sign (altho it sort of seem to me these also fit under 3)
3. Neuropathic Pain: "constant, boring, burning or tingling intensely ... Paraesthesias include pins and needles; tingling; shivering; burning pains; feelings of pressure; and areas of skin with heightened sensitivity to touch. The pains associated with these can be aching, throbbing, stabbing, shooting, gnawing, tingling, tightness and numbness."
Also, http://www.webmd.com/multiple-sclerosis/features/pain-multiple-sclerosis
which ends with a very interesting paragraph about MS pain and hypnosis:
"Kraft, meanwhile, has recently begun a study looking at a very different approach to MS pain: hypnosis. 'It's well known that there is a 'gating' mechanism in the higher cognitive parts of the brain to let signals come through to the consciousness. There can be all kinds of mischief in the pain fibers in the spinal cord, but it has to get through to the cortex before it's painful,' he says. 'With hypnosis, we hope to block or at least reduce the interpretation of that stimulus as a painful stimulus. It looks promising so far, and obviously it doesn't have the problem of medication side effects.'"
There's also what looks like an interesting article at
http://www.ncbi.nlm.nih.gov/pubmed/17928147 if anyone can get hold of it.
sho (who's hoping someone else knows the real answer)