I was just curious because my CFS onset started after using amphetamine salts (adderall), While this and acute stress, not eating enough and vigorous exercise all played a hand. I haven't seen a lot of people cite this as being a player in their onset of CFS, some people even use adderall for symptoms. I am a believer in microglia priming being a major player in this. Just wanted to throw this out their and see if anyone else has a take on this.