Wow! There must be something either magical or sinister about DE. How glad I am that I found these comments here. I started taking DE on April 6 and woke up on April 7 with the beginnings of a cold sore on my lip. I have never had a cold sore in my life! When I looked it up, all the "experts" made me believe I have a herpes virus!..WHAT?...WHEN?
Knowing that it is likely a DE reaction makes this embarrassing and painful episode worth tolerating. Thanks for all the comments. Extremely soothing.