With SVG we can add a clipping path to change the shape of our images. First we open a SVG tag with namespaced href attribute and namespace definition: <svg class=svg-graphic width=180 height=200 viewBox=0 0 560 645 xmlns=http://www.w3.org/2000/svg xlink=http://www.w3.org/1999/xlink version=1.1>.
Just as with other types of migraine, the underlying cause for migraines with visual symptoms have not been definitively established. Many researchers believe that these symptoms are caused by a short-lived reduction in blood flow, which might be caused by a spasm in the blood vessels.
After years of expensive dental work my neurosurgeon diagnosed facial migraines when my daughter was 20. 20 years of pain and not knowing what was causing it. The migraine medications (like Imitrex) is the only thing that will stop them. I find when I get real hot is one of the big causes of my facial migraines.