Nothing Compares 2U singer Sinéad O’Connor, 48, has announced that she’s been forced to cancel a series of tour dates during the summer upon her doctor’s orders. O’Connor is suffering from ‘exhaustion’ as a result of an unresolved medical problem.

A statement released on her website read: ‘Sinéad O’Connor apologises profusely to her fans but she cannot travel this summer anymore. She is suffering from exhaustion due to an existing not resolved medical situation and she has been advised by the doctor to stop any activity and rest. Because of this she is completely unable to travel and to perform.”

The dates in Norway and Canada have been cancelled and full refunds will be issued.