Adele has postponed five dates on her tour of North America because of laryngitis.
Columbia Records said the 23-year-old Grammy winner was diagnosed last Thursday in Minneapolis, where doctors ordered immediate rest and her show was cancelled.
Adele performed in Denver on Saturday, but her show in Salt Lake City on Sunday was axed at the last minute "when her illness worsened".
The tour will resume on June 4 in San Francisco.
Performances in Minneapolis, Salt Lake City, Seattle, Portland, Oregon, and Vancouver, British Columbia, have been rescheduled.
Adele's new album, 21, has been at the top of the music charts in the US.