My craniotomy was 3 years ago this month. You now have a new normal for yourself I found out, and that is okay. There are lot of things that changed for me. Things are different for everyone. But for those that get HEADACHES here is a tip. I tried all kinds of medications, having a pain level at a 10 out of 10 and finally asked the neurologist if there were any new things to try and he said the Vitamin D is showing good progress. Yes Vitamin D, 400 MG (200 MG in the AM and 200 MG in the PM) it worked for me, headaches went from 10 to 3 (which I can deal with). Reasoning for not taking 400 MG all at one time is the body can’t use that amount all at once that’s why you split it up. You can’t overdose on Vitamin D your body with send it to your urine. Yes your urine will be really yellow anyway. It can take a little time for it to work but be patient it ends up helping a lot of people I tell this to. I had stopped taking it for awhile and the headaches came back. I got back on and am now having headaches around pain level 3 again. Be patient it can take up to 3 months to start working but I will take it forever if it keeps my headaches mild.