Cytoplastospora and giardia. No physical symptoms other than the depression and the resulting bacterial infection in my digestive tract.
The Cytoplastospora is microbial and only found with a microscope.
I actually had no idea parasites could cause depression and got a little angry when the psychologist suggested I be tested for them.
"im here because I'm suicidal you idiot!"
"OK, I'm ordering a parasite test."
Thank God, he had seen it before and knew what he was looking at.
Sometimes I wonder if I have the same bugs.
I'd get checked then if I were you man.