There was a thread recently where this was briefly discussed, though I
can't seem to quite find it now.

On AOPA's web site, they talk a bit about how the feds do try to levy
stiff penalties on people whom intentionally misrepresents facts on the
medical, if they're caught.

(And they indicate that simple oversights can usually be cleared up with
some additional work and talking with people before it snowballs.)

http://www.aopa.org/whatsnew/newsite...29medical.html

Apparently, they (los federales) generally save revocation for
intentional falsification if found in aftermath of an accident or
incident, and suspension if less serious.

I certainly understand why pilots generally feel they don't volunteer
anything not explicitly asked for -- reasonable enough, given how things
works in the real world. Just make sure one doesn't misrepresent any
materially important fact, I guess.

-Dan