I am pretty sure I had it. Accidental OD of buproprion. I had clear mental status changes, visual distortions, weakness in my hand and arm (I tried to write a note with pen and paper and could not, I had trouble putting on a sweater or a tshirt). I think this happened twice. The first time, I was seeing objects that were distorted like in some 3D movie (the one with glasses) with neuro-muscular weakness. The second time, I was out for a walk in my neighbourhood and got lost and confused as time went on. When I found a main street near me, I had to keep repeating in my head the directions to get home. When I got to my door, I tried to open it with my key and just could not work the key for 5 minutes. Then I started have serious paranoia that someone would have known what kind of state I was in and I promptly got into bed to sleep it off....
The first time I went to the ER and they kept me all day including a stint at the psych ward and claimed it may have been "psychosis". In my non-professional opinion, both were serotonin syndrome.
I'm curious to see what other people's experience is with this and if they consulted medical professionals and whether or not it was formally diagnosed. I feel like this is overlooked or rarely ever considered.