Rori from what I have read, you are smart to be paying attention and asking these questions.
There is some info on Stephen Harrod Buhner's Lyme site, Dr. Jones kids site and I'm sure there is some on ILIADS too.
I am just a fellow participant like you but I would strongly encourage you to follow your gut and have your son tested, particularly if you have been noticing any symptoms that concern you. Is the pediatrician Lyme literate or
open-minded regarding Lyme? If not, you might need to consult with someone who is.
Healing since Jan 5 2012www.compostingwords.net
is the link to my lyme healing journey blog mixed with other random writing.
Using a mix of antibiotics, herbs, acupuncture, lyme diet and experimenting with hypnosis for positive thinking and green smoothies for increased nutrition.