Runeterra and Mental Illness
Before I start this post, I would like to say this is NOT a call for "mental illness representation" in League of Legends. I do not care if there are characters with them or without them. I just like to ask questions about the lore.
That being said, how prevalent is mental illness in Runeterra, do you think? Do battle hardened soldiers like Garen and Darius struggle with post-traumatic stress disorder due to the things they've seen on the battlefield? Maybe even Teemo? Is Jinx a sociopath? Does Orianna struggle to cope with losing her human form?

most likely has some form of multiple personality disorder as she talks to her guns and all of them are supposed to have a personality. Fishbones being the "normal girl part" of jinx, pow pow is supposedly rather laidback like eeyore and idk for zap tbh. Most likely incurred by a trauma too.
is weird. Omega squad obviously suffers from PTSD. Regular teemo supposedly changes in personality extremely when on a mission compared to his happy self in general.
probably apply too.
.
suicidal tendencies.
depression probably.
delusional.
?? He has a lot of mental issues (paranoia...) He is talking to a lizard, and have strange hallucinations (holy weasels...) Also he is aggressiv, really- really aggressiv, this is the only way he can express himself.