information fatigue
/ˌɪnfəˈmeɪʃn fətiːɡ/noun
Apathy, indifference, or mental exhaustion arising from exposure to too much information, especially (in later use) stress induced by the attempt to assimilate excessive amounts of information from the media, the Internet, or at work.
Origin
1990s. From information + fatigue. Compare earlier information overload.