The 'Wrecking Ball' hitmaker postponed all outstanding dates on her 'Bangerz' tour earlier in April after being hospitalised in Kansas City, reported Digital Spy.
Cyrus, 21, was due to continue her performance schedule on May 2 in Amsterdam and May 4 in Antwerp, but promoters have confirmed that those dates will be moved to June 22 and June 20 respectively.
She will remain under a doctor's care, until her next scheduled concert in London on May 6.
The popstar hinted at more health problems with a series of posts on Twitter over the last two days.