Things are not going so well for Demi recently. In just the past couple months she has dealt with a separation from Ashton, the death of a friend and also dropped her recent role in the upcoming film, Lovelace.
Demi was hospitalized last week after having (what is believed to be ) a seizure. In a very scary 911 call last week, Demi's friend told emergency dispatcher "She smoked something. It's not marijuana, but it's similar to it. It's similar to incense. She's semi-conscious, barely....She's shaking, convulsing, burning up."
Her representative is saying Demi is being treated for exhaustion. With all that is on her plate this is not very hard to believe.