Lived most of my life with migraines (which usually lasted a few days), photophobia, oily face, and inflammation. Those were the most obvious symptoms I could tell. I remember not being able to go out during school recess because I found the sunlight blinding.

A loud noise, a bright light, or strong smell, would all immediately cause a strong migraine to set in and stick for hours.

After eliminating sugar (and highly processed foods) and going on a low-carb diet about 2 years ago, all of those symptoms are pretty much gone and I feel much healthier overall.