I have several answers I've considered, but the one I'm going with is:
This winding road is rather illusive
Hallucinations can come from psychosis. They cause the world to be false
Must I say it's been rather conducive
A product of my imagination? Or an incomprehensible dream?
Is it a hallucination, or is it part of catatonia/stupor? What's really going on?
A feeling of struggle, what could it mean?
A person is trying to fight it?
No-one understands, I try to explain
It's hard to describe the effects of psychosis.
The thoughts and feelings that begin to manifest in my brain
suicide, disconnect, delusions
Perhaps these temporary manifestations are beyond human grasp
Another comment about hallucinations or how it's hard to understand psychosis?
This he vaguely remembers, it all happened so fast.
Psychosis can be temporary.
Hint 1: This can be induced by almost anyone, at any given time. It can also be a consequence of something.
Almost anyone can face enough stress to induce psychosis at any time. You could lose everything very quickly.
I didn't feel super strong about that one. There were several questions that seemed VERY similar, so I was just rewording my lines over and over. One good thing is that my answer kinda fits the comments OP has been posting. Specifically the one: "This isn't exactly a mental illness as such either, since mental illnesses are usually chronic. Like I said, this can be induced, but can be a consequence of something as well."
Some other answers I thought of:
A coma. There's some humor in "This can be induced by almost anyone, at any given time."
Panic attacks. This seems to fit the general theme, but it's hard to come up with answers for every line.