Singer Miley Cyrus has reportedly been forced to cancel her concert in Amsterdam this weekend (02-04May14) after suffering a "health setback."

The pop star was admitted to a medical centre in Kansas City, Missouri on 15 April (14) after suffering a bad reaction to medication she had been taking for a sinus infection.

She was discharged last week (24Apr14) and planned on getting back on the road after having to postpone the remaining portion of her North American Bangerz tour.

The Wrecking Ball hitmaker was due to take the stage in Amsterdam on Friday (02May14), but the show will now be rescheduled, according to

A source says, "(She) had a health setback and her allergic reaction issues have returned. Miley is very bummed about it."

She is also expected to postpone her show at the Sportpaleis in Antwerp, Belgium on Sunday (04May14).