depression
"Have been taking Cymbalta 60mg/day for 2 years - not many noticeable side effects other than sweats, daytime sleepiness and "flat" emotionally. Tried to wean myself off (due to insurance loss) and experienced horrible withdrawal symptoms - anger, restlessness, and an intermittent feeling inside my skull variously described by other users as "electric twingeing", "brain zap" or "head shock" (rapid pulses strong enough to make my eyes flutter; am back on for now."