Hello. I Am A Female, Mid-40s. Several Months Back, I

Hello. I am a female, mid-40s. Several months back, I noticed a 4-5" crevice at the top center of my skull. Less than 2 months ago, I noticed that it moved toward the top rear of my skull into a concave, 3", somewhat half-spherical shape (the original indention was now gone). I do have lesions throughout my brain (MS); could this be related? Thank you.