Miley Cyrus is postponing her US tour while she recovers from an allergic reaction to antibiotics, but will resume her performances in August.

Cyrus' representative said the singer will resume the US tour on August 1 in Uniondale, New York.

The new dates will include seven rescheduled shows and two additional stops.

The European leg of the tour is still scheduled to kick off on May 2 in Amsterdam.

Cyrus' rep said the singer suffered from a sinus infection last week during her Bangerz tour and had "an extreme allergic reaction" to the antibiotic cephalexin on Tuesday. Cyrus cancelled several shows this week as a result.

Existing tickets for the 21-year-old singer's US tour will be honoured at the new dates.