I'm coming late to this discussion so I hope you have this mess fixed by now.
I've been put through FMLA hell so I know a bit about it.
Section2 says "includes any one or more of the following:" NOT ALL...They are full of postal CRAP! You have an ongoing medical condition..you qualify...PERIOD!
I had a problem when they mis read what the doctor wrote....they said she said I was not able to work at the PO..what she had said was I was not able to work at the PO WHEN I WAS ON FMLA LEAVE.
I had to go back and have the documentation rewritten. In the meantime I got a note from the doctor saying that YES I COULD WORK. PM made me stay home. When I grieved it..get THIS

..he said the DATE on the doctors note wasn't visible (I made a copy).
Understand..I was in the office several times, I live across the street and this PM normally had NO problem calling me at home. I had the original!
So I ened up with a long weekend by the pool, grieved it and they had to pay me for those days

.
Ok back to you...WHO is denying the FMLA? The reason I ask is that my SS insisted that the PM was the one who approved or denied (yea, it was for stress...and HE was the cause!). There is an FMLA coordinator who approved or denies.
And BTW...if I were you I would file a SECOND FMLA for the stress tehy've put you through...have the EAP councilor fill out the paperwork.
WE WORK FOR ASSHOLESSSS