Elena had the white coating on her tongue for quite awhile. I was convinced it was thrush and called the pedi who called in a script for nystatin. Well, we kept treating the tongue with nystatin and the white coating didn't go away. Finally, I had her at the pedi for a well baby exam and mentioned that the thrush wasn't going away and the pedi looked and said it wasn't thrush. She didn't offer what she thought it was, just that it wasn't thrush.
Fast forward a few months, in the mean time I had been dealing with the ED and we got to baseline and I realized one day that Ellie's tongue was no longer white. Around the same time there was a thread going on here about geographic tongue. Having no idea what that was, I did a google image search and found a lot of weird looking tongues that had no resemblance to Ellies. But I also found some images like this that really looked a lot like what Ellie had:http://www.entusa.com/oral_photograp...hic_tongue.jpg
Further exploration of the geographic tongue thing led me to discover that it is often associated with allergic people. Ellie gets it once in awhile, but mostly doesn't have it.
That same thread also brought up crustiness behind the ear, which prior to that I had noticed on Ellie but not known that it was related to allergies (just an aside in case the ear crusties are your next source of stress.
). Apparently it is a bit of excema. I'm not sure why this remains when we've been at what I consider baseline for quite some time with only the occassional exposure.
Hope this adds a piece to your puzzle.