You will never find your needle with all the sneezing.

Haunter of days and nights of many. Preventer of goals, and stems from uncertainty. Controllable with help, human or pharmaceutical I go by many names, but steeped in fear probably neurological

The only thing I can do with this riddle is weep. What am I?

A thought experiment kept in a box, alive or dead, behind quantum locks. Do not open the lid, curb your curiousity, for you know what they say, curiousity killed me.

Red Rover? Calico slayer? Odd little trinket? Why is everything I say a question?