This abstract came up in my RSS feed, I was flabbergasted. Could that be true. Is it internet addiction or video game addiction all over again? Reading the full article showed the authors have very little to back up their suggested causal relation between twitter and psychosis. Other factors could more likely contribute to the episode. Moreover, another egg chicken problem.
Kalbitzer, J., Mell, T., Bermpohl, F., Rapp, M., & Heinz, A. (2014). Twitter Psychosis The Journal of Nervous and Mental Disease, 202 (8) DOI: 10.1097/NMD.0000000000000173