Although the condition is reportedly unresolved Cook was released from the hospital a few hours after arriving and returned to the Idol apartments. Speculation is that the illness was brought on by Cook being stressed over brother, Adam Cook, having a set-back in his health due to having cancer.

1. Wasn't taken by ambulance to hospital
2. Treated by a private doctor
3. AC on Cook's guitar are initials of his brother
4. Flu-like symptoms have been circulating amongst Idol contestants
5. Cook didn't feel well during show but waited until after show was over to go to hospital
6. Treated with medicine to lower blood pressure