I used 'overjoyed', which I hear most often and conveys the same meaning. Not accepted.
Personally think that overjoyed is a notch below crazy. I would say "insanely happy" (if I thought Duo would accept it).
I wrote: He is crazy from happiness
Not accepted, though last time I tried it fixed me with that... Weird..
I wrote "He is overwhelmed with joy." Marked wrong. In my life (I am 75) I never heard "wild with joy."
The full sentence doesn't actually affect what lesson it appears in, just the words in the sentence. This sentence contains the word "fou", so it's in the medical sentence regardless of context.