Pop punk Pink has been forced to postpone three more shows on her North American tour on the advice of doctors.

The So What hitmaker has already rescheduled concerts in Salt Lake City, Utah, and Denver, Colorado, for the end of October (14), after falling sick with a throat infection.

She has now scrapped three shows on the Canadian leg of the tour after medics warned her she needs more vocal rest.

Gigs originally scheduled in Edmonton on 23 October, Saskatoon on 24 October, and Winnipeg on 26 October have now been rearranged for early next year (14-16Jan14).

Representatives for promoters Live Nation Entertainment have reassured fans that tickets for the postponed gigs will be valid on the new dates.

They said in a statement on Tuesday (22Oct13), "It became clear after further consultation with her doctors today that more rest is required for her to fully recover from inflamed vocal chords and laryngitis."