One theory:

Heart burn related issues supposedly led to other symptoms such as throat spasms and eventually even migrated up to my temples causing spasms there. so the doctor(ENT), who is a great doctor put me on prilosec. it has def tempered down these spasms. but in other ways it may have caused other issues.

These spasms all began when I recall a year ago, i had the same type of issue with heartburn, but more importantly prototypical heartburn sympoms. so i begin to take nexium. and the heartburn leaves, but at the time I am really into alternative health stuff. and nexium supposedly causes your body to deplete itself in electrolytes like calcium, or magnesium. so i tell my doc, I'm going to discontinue Nexium and take something else. I was thinking of taking digestive enzymes, which are known to help gastro issues, and also take betaine HCL. But anyways back to the story soon after I discontinued nexium, these spasms which i never had before came up.

and since at the same time I discontinued nexium I discontinued gabapentin. to see if i could go without it. These spasms increased. so i decided to go back to taking the gabapentin to see if it would go away, it did initially but after awhile it didn't matter. I was convinced that it was actually the stopping of the gabapentin(not the nexium) that made it worse.

so even though these enzymes, PPIs, and betaine HCL could decrease my heartburn gastro issues. they def may have been causing other issues like trouble sleeping etc. I feel like maybe with no acid production in my stomach there is no acid to metabolize the medications. anyone experience this?

2. then there is one another theory i had....when i went off lexapro for a sustained amount of time 1 1/2 or 2 weeks. i def had some trouble sleeping during that phase, although during the day i could function quite well, my anxiety was there at times, but overall i could function. Music sounded better, tv shows started to actually be interesting. but it was so hard just not sleeping at all for like 2 nights in a row. it was actually so shocking that i had to go back on them. so, this theory could be true, that since i went off lexapro for such a duration as to make it not work as effectively when i came back on it. this is my main theory.