you could have had a spike from the salt with your BP. the headache doesnt help that either.
have you tried oxygen therapy? this frontal lobe thing is like an icejam. i cleared my head with h2o2 long ago. the food grade stuff. it acts a whole lot like Miracle-Mineral-Supplement . here is some info on it.
there is a lot more on the web, but basically you get food grade 35% h2o2 at the health food store. get a little brown dropper bottle. take only on an empty stomach or you will hurl. put a couple of drops in a glass of water and drink it down. i would be real interested in how much progress you can make with this stuff.
you also said you take melatonin. the Iodine will make this work better. do you need less of it lately?
the frontal lobe headache also reminded me of quitting coffee. do you drink coffee? have you ever?
just more things to think about. yes, a break and a strategy is what you want.
another thing some have tried is doing a sudden breakthrough dose to try to overcome the symptoms with that.
btw, while you are breaking, take mega C. like 3 or 4 or 5 grams a day. that will strengthen your blood vessels.