I'm sorry for your friend's daughter. That's such a young age to be having issues like what's she's experiencing. Yes a neurologist is the doctor you are wanting, perhaps the hospital could give a recommendation or you could contact your local MS society chapter for a list of neurologists in your area. On the website there is a section for finding your local chapter and you can find a phone number there.
Unfortunately there isn't one test for MS. The doctors have to rely on multiple tests which include MRI's of the brain and possibly the spine, evoked potentials tests, and spinal tap. And, like the doctors at the hospital said MS is an exclusion based illness meaning that there are many other things that can look like MS and need to be ruled out. Things like Lymes disease, thyroid problems, b-12 deficiency, Lupus, fibromylagia and a bunch of others have similar symptoms.
The spinal tap can be used to check the spinal fluid for things like bacteria, glucose levels, or infection. If antibodies and oligoclonal bands show up in the spinal fluid that might suggest MS.
Please feel free to ask any questions you may have, we'll do our best to help. Tell your friends to hang in there and they are more than welcome to post as well. Please let us know how the young lady is doing.
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