Hiya Ipoarch, welcome to the Bluelight forums. Please read BLUA and the Greenlighters Guide as these will very much help you here.
I have heard of serotonin Syndrome but do not know much about it. You can develop this by taking antidepressants at too high a dose or for various other reasons. Other drugs can also develop SS too. Please use the Bluelight search engine to search for this and if you cannot find the answer that you are looking for, please feel free to create a new thread and ask, in the necessary sub-forum. If you are unsure of where to place your thread there is a sub-forum called Homeless Threads' put your thread there and the moderators will move it to the correct sub-forum. I hope you get what you're looking for from Bluelight and all the very best.
Evey xxxx