Hey Tn...Interesting question... Many possible answers.
YEARS ago.. when many ducks said.. "No Lyme HERE".. and "Lyme doesn't cause THAT symptom"... and/or, "You've already had enough antibiotics, you are now cured", as you lay on the floor at their feet begging for mercy....
Well.. back then.. to be able to PROVE we were sick (how degrading can that be).. many of us went through these tests... and too.. because we didn' know better.
Also.. some of us had to endure them to be "documented" so insurance would be more inclined to pay for treatment.... IF they showed something was out of whack... and IF insurance companies decided they would.
We were pretty much tested to death back then.. or until we had no more money! THEN... unfortunately.. we were STILL (most of the time) denied help.. no matter what the results were.
We learned things from those early pokings and prodings... things I wish everyone would consider before subjecting themselves to these tests.
1. MRI's MIGHT show something going on.. but often not.. even when things are actually going on. And if they do show something .. many of the idiots can't read the results anyhow... and many of us are told wrong "stuff" because of the idiots who don't know what they are doing. Many Lyme patients got an "MS" diagnosis.. because the white matter lesions resembled what some doctors had seen in MS patients.
We learned it is a good money maker for the test givers... and we learned negative tests were likely to make us lose in the long run... cause even if we were sick, even VERY sick... we were THEN stuck with a test result that said it didn't see anything wrong with us. Boy oh boy was that the best news an insurance company ever heard! As they sat in their ivory towers they stamped on bills... "Nothing showing.. we no pay!"
2. Spinal tap. I'd like to TAP a few jerks who think that is an important test.
It is invasive, dangerous, costly, has side effects that can be disabling to some.. risky, etc. etc. and NOT nescessary for a Lyme diagnosis.
To make matters worse.. it is done to try and PROVE Lyme or not... which is basically impossible. Never has there been any test developed that can prove someone absolutely does not have Lyme disease.
One problem is.. Less than 20 percent of folks who have neuro Lyme have a positive test in the spinal fluid. Many reasons why that happens.. but mostly because the stupid tests can't pick up various strains of Lyme... and are so innaccurate they miss over 90 percent of those who have Lyme.
Then.. if you were to get a positive reading for Lyme.. it was often then called a "false-positive" by many of the idiots who were bent on diagnosing us with ABLS... and ONLY ABLS!
[ABLS- Anything But Lyme Syndrome]
They didn't want to be proven wrong. An ego thing... or EVIL.
And.. if you tested negative.. it was the ducks sure fired way to prove to YOU that you weren't sick and all that you needed was a box of antidepressents and a boot in the hind quarters to get you out their door... AFTER your wallet was emptied, of course.
And to be fair.. lets say this test DID show Lyme. Well the ABLS kicked in.. and folks were told the test results would "remain" positive after the infection was cured.. and again.. that it was a false positive... and folks didn't need treatment. IF they were given treatment.. it was not enough.. and even the wrong treatment more often than not.
Soooooooooo.. you were pretty much out of luck if you went that route.
3. As far as SPECT scans.. they may use dye. They can be dangerous. It tells you something may be wrong.. or not. It is often misread by many of the ducks who don't have a clue. Basically the same story as above.
And.. if this test shows something.. NO ONE can prove Lyme is causing it.. so what the HAY?
Next page...
OK.. let's say you have a sore throat.
NORMALLY you don't have to PROVE you have a sore throat when you show up at a doctors office. He may say.. well take this syrup and 2 asprin.. and call me in the morning... blah blah blah.
But.. let's say for that sore throat.. you COULD do an MRI on it. Not that an MRI would show anything... but you could do it if you wanted. And they could order a spinal tap too. And even a SPECT scan.
Would it help in the diagnosis? Probably not. Is it worth doing? Probably not.
It's a SORE THROAT! Treat it and be on your way.
Same with Lyme. It is endemic. It is all over. If you already know you have it.. rash, tick exposurte, symptoms, etc.. WHY test it to death?
TREAT IT!
Don't waste time on the duck merry go round playing games while the infection spreads. Very simple.
IF the treatments don't work.. and that means having someone who KNOWS Lyme treating it.. and there seems to be something else going on.. and you have a doctor who KNOWS WHAT THEY ARE DOING and KNOWS LYME...
And THAT doctor suggests more tests.. well ok then. Consider doing them.
By the way.. if someone wants to do a spinal tap on you.. ask them what EXACTLY they are looking for.
ALL of the things they will be searching for can be tested by using blood and/or urine. Sooooo.... why do it?
Also please note..
Some of the LLMD's use these tests on patients to help them get documentation for insurance.... and on ocassion to rule out other things. That can be expected. But it is NOT routine.
And sometimes they do them for research studies.. which helps us all. If I were to do these tests.. that is why I would do them.. for research for the LLMD's... so they can help all of us.
Keep in mind.. I am not a doctor. This is MY opinion only. But I HAVE done these tests.. in the "old days" when I didn't know better. Some of them more than once.. more than twice.. and more than 3 times. Knowing what I know now, if I were told I had to do them again... FORGET IT! Wild horses couldn't drag me through that mess again.
Keep in mind to please.. if all these tests were positive by some odd chance.. the end results would be the same if they weren't.
That is to TREAT Lyme disease.
Hope that helps.

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If you get the choice to sit it out or dance...