This happens so often!
I am female and was young. So I got a bunch of diagnoses even without ever seeing a psychologist or psychiatrist. I didn't even got any tests.
-depression
-eating disorder
-hypochondria
-conversion disorder
-burn out
The hypochondria I got over the phone, how professional is that eh?

Depression was because: "weak handshake, speeks unclearly and lack of power. Has no expression left on her face"
Eating disorder because I lost a lot of weight because I couldn't chew and choked all the time.

It was a real fight, because when I finally saw a specialist, he did not do a thing and referred me to the psychiatrist because of the "diagnoses" on the letter. I did not go.
So, it wasn't until I couldn't do a thing, like breathing, I was admitted (and not at psych ward as dear old GP suggested), and finally saw a neurologist. Blood was drawn, tested for a whole bunch of things...and lots came back positive.