My mother was vibrant and active until a fall at home. She was initially misdiagnosed by the ER and sent home. 24 hours later she was in such severe pain she couldn't walk. She fell again trying to get out of bed 48 hours later. That is when we noticed increased confusion. Another 24 hours later she was fully delirious. We took her back to the ER where they performed a CT scan of her hip, and low and behold it was shattered. Hip was repaired, but the delirium has not resolved. It's 1-week post surgery.