Miley Cyrus Miley Cyrus

Miley Cyrus has been forced to postpone several more dates her on Bangerz tour due to illness, People reports.

The "Wrecking Ball" singer was hospitalized on April 15 after suffering an allergic reaction to antibiotics, and is currently battling a recurrence of the same problem.

The most loathed TV characters

"After a period of improvement, Cyrus' symptoms have returned and doctors will not permit her to travel," a rep tells the magazine. Subsequently, Cyrus has pushed back one concert in Amsterdam scheduled for Friday and a second in Antwerp, Belgium that was set for Sunday. She is expected to recover in time to perform in London on Tuesday, May 6.

When she was hospitalized earlier this month, Cyrus had to postpone her remaining U.S. dates. She is set to make up several of those missed concerts in August.

On Monday, Cyrus, 21, opened up about her recent health ordeal to Ryan Seacrest on his morning radio show. "It was so scary," she said. "I had basically been poisoning myself with something I didn't know I was really scary allergic to."

Check out more videos Cyrus here.