Thanks for using the forum. I am happy to address your questions, and my answer will be based on the information you provided here. Please make sure you recognize that this forum is for educational purposes only, and it does not substitute for a formal office visit with a doctor.
Without the ability to examine and obtain a history, I can not tell you what the exact cause of the symptoms is. However I will try to provide you with some useful information.
I am not sure what you mean by vertigo. (It has many different meanings to different people). However, a common cause of true vertigo can be structural problem in/near the brain. The most common is a benign tumor called a schwanoma (also called acoustic neuroma). This is diagnosed by MRI of the brain. I am not sure if this what you mean in your description, but I assuming it is. As you mentioned multiple sclerosis can also cause vertigo, but often, other symptoms are present as well. A normal MRI of the brain (i.e., not consistent with MS) excludes multiple sclerosis.
The pain you are describing may not be related to the vertiginous symptoms you have experienced. Do you have a history of migraines or other type of headache? Migraines/headaches can have associated allodynia, where there is pain to a nonpainful stimulus, much like you describe.
I suggest that you discuss your symptoms with your primary physician.
Thank you for this opportunity to answer your questions, I hope you find the information I have provided useful, good luck.
I had lots of MRI when the left side stopped working. That is when they found the spot where the brain leison. Certainlly no tumors.
Dont get hung up on the vertigo. The real problem was the left side not working and now the strange face pain 7 years later.
I have no history of headaches. Sure I get them now and then but this is a sharp pain only when I touch that spot, not like a dull head ache pain.