GH - I think the bacteria - bart/lyme...etc...can be THE diagnosis - even with differing symptoms.
It all depends on what areas of the body it has disseminated to, and maybe gravitates toward our weak areas. We may not have all the three "B's" - but I do believe that they can cause differing symptoms for people.
This isn't the only disease that does this.
For instance...Celiac....some people have diarrhea...some have stomach pain...some have skin issues.
My son had neither of the above...but he had other symptoms...
Just my opinion.