Yesterday, we told you that Miley Cyrus was on the road to recovery and would be starting the European leg of her Bangerz tour on Friday.

Unfortunately, Miley has fallen ill again, and will have to postpone those concerts as well.

Miley’s hospitalization began on April 15 after she started suffering from a severe allergic reaction to a prescription she was given to treat a sinus infection. Miley is allergic to Penicillin, and although she was not given Penicillin, she was prescribed Cephalexin, which is in the same drug class as Penicillin. Miley then spent nearly a week in the hospital under the care of doctors.

During an interview with Ryan Seacrest on his radio show On Air with Ryan Seacrest, Miley explained that she was feeling better, but there was a chance that the reaction could happen from five to 27 days after the initial reaction. “I should be all good, but what was the worst is that this reaction can happen from five to 27 days,” Miley explained to Ryan. “But I’ve been really good, and now, I just have to be more careful.”

Sadly, although she was improving, the reaction returned and she is again under the doctor’s care and has been told that she cannot travel at this time. “After a period of improvement, Cyrus’ symptoms have returned and doctors will not permit her to travel,” her rep informed CNN on Wednesday. “This type of extreme reaction can last up to 27 days and Cyrus must remain under doctors’ care at this time.”

Miley has a show scheduled at London’s O2 Arena on May 6. She is hoping that the doctors will allow her to travel for this show.

Image via Twitter