Principal engineer salary range. The average principal engineer salary is $96893 based on 571 salary records. The typical salary range for those positions with principal engineer in their job title is between $76346 and $117439. The lowest salary in the principal engineer data was $55000.
migraine miÂ·graine (mÄ«'grÄn') n. A severe recurring headache, usually affecting only one side of the head, that is characterized by sharp pain and is often accompanied by nausea, vomiting, and visual disturbances. Also called hemicrania, megrim, sick headache.
Practice Essentials. Migraine is a complex disorder characterized by recurrent episodes of headache, most often unilateral and in some cases associated with visual or sensory symptomsâcollectively known as an auraâthat arise most often before the head pain but that may occur during or afterward (see the image below).