Suggest Treatment For Spasms To Entire Head With Negative MRI

Began several weeks ago have spasms to entire head while serving in tennis. Pain began in the basal area of skull and moved to frontal and both temporal areas. Once I stand still for a few seconds symptoms resolve.. I have no hx of injury or pain with movement or palpation. No dizziness but on occasion fullness in ears.. Symptoms worsened and had negative MRI. Now I am having symptoms when laughing really hard and running as well as serving in tennis. My primary care MD is uncertain. I am very concerned. Any info would be grateful..