Mine was from Trauma and came on suddenly. I am 5’10 and weigh 160 pounds was strong and active prior to the concussion. Now it is headaches every day, cognitive issues, nausea, (that I control with very strong ginger Beer (which really isn’t an alcoholic beer)balance issues, (that I now know how to move safely after Vistbular Therapy. My doctor wasn’t happy with me using extra strength Excedrin, So I found Magtien and use that 400 mg Thiamine. That worked for a while, but no longer. Though I am still taking Magtien with Thiamine. Now I find, I can use caffeine (very strong Scottish black Tea). I have a Mug first thing in the morning and if I also have a Mug before bed, I can sometimes wake out without a headache and get to my morning cup. If the headache rears up in the afternoon I drink coffee with a shot of espresso. These keep me functioning, though don’t really help with the cognitive issues.