I've had this problem on and off, where I would have a sim just get frozen and won't do anything except complain of their ailments. They wouldn't move to do anything they wouldn't even die (cuz I tried just letting them stand there and let them die of starvation but when it got to that prompt to die they still wouldn't even do that)The sim just stands there complaining no matter what I do. Has anyone else gotten that glitch? If so does anyone no how to get it back to normal without having to start a new game in that world?

try the resetsim cheat first name , last name.

i had that glitch and she just sat there but she was teching her child how to talk