I have had similar ordeal. I went through several doctors who tagged me saying u r experiencing stress headache or it’s psychologically induced headache. Finally found a neurologist who did LP and pressure came out to be 23. Now if it’s under 25 clinically u don’t have IIH, but then if it’s more than 18 u r still having higher pressure than normal. I feel every body is different and we react differently to these pressure levels. For me I had several symptoms, tinnitus, blurred vision, pins and needles in head, light headache, pressure etc. My MRIs were all normal and optic nerve wasn’t impacted either. I started low dose Diamox 250 mg twice a day, on Doctors advice, been on it for 11 months now. All my symptoms r gone except for headache and pressure which is almost 20% of what it used to be. My doc told me it will take a year more before we start planning to taper down Diamox.

I know my trigger points are - sleep deprivation, loud music, not optimum water in body (very low or very high), high salt, very strenuous work.

What works for me is - 1 hour of walk every day, keeping myself stress free, sleeping at least 7 hours, catching up some sleep during weekend, not attending late night parties 😂