Just a guess- but you might consider TIA or transient ischemic attack, also known as a mini-stroke. The stress level and blood pressure can go up with extensive talking & high blood pressure can increase risk of stroke- does the patient have this?
Perhaps she should consider getting a doppler of her carotid arteries, since she is feeling something in her neck. Also, an MRA/MRV may reveal any abnormalities of the blood vessels in her head. That is a special MRI that looks at the arteries and veins in the patient's head.
Another thing the patient may want to look into- what kind of shape her TMJ discs are in (it takes an MRI to look at the discs and not just the jaw bones) and whether she might be getting pain from a temporal mandibular jaw dysfunction. I get very bad pain in my jaws that can lead to migraines when I talk extensively. Though the only time I recall it feeling numb versus the swollen feeling I often get was after a car accident where I got severe whiplash... then my right jaw went numb. If the patient has an overbite, people with that have a tendency to get TMJ problems. I use a flat-planed splint at night for mine, since I clench at night... it has helped with the migraines some, but I still can get a lot of pain talking extensively.
I just wonder if you might take your question to the neurology forum? You might get more advice? Does this person have a brain tumor?
Topamax is not the friendliest of medications (hence the nick-name, dopamax), but there are other options.
Can you indicate what is in the imaging report? Is it white matter? That can be too general to determine the source of the issue.
There are also autonomic disorders, where blood pressure is not maintained.
The patient currently sees the neurologists,and he end up give her the epilpse treatment (tapamax tablets)and then the pain stops. But she is not comfortable with the treatment and she stopped taking it.
She gets numb in her head and she will hear something like a heart bit sound going down her neck.She has never been to Cardiologist or a lung specialists
Numb where? Besides a scan, there are other tests to run on the nerves to detect if there are issues.
What kind of doctor has the patient been seeing?
You get a severe headache and then go numb after you talk for an extended period of time? Have they suggested a Cardiologist or a Lung Specialist? I mention this because if you are winded after talking that would be a heart problem; and getting severe headaches may be a sign of not getting enough oxygen to your heart or to your lungs.
But numb where? In your chest, your arm, your head, where are you numb?