Add Whitesnake to this summer’s casualty list. The group has cancelled the remainder of its tour with Judas Priest after lead singer David Coverdale was ordered by doctors to stop singing immediately to prevent serious damage to his vocal chords.

Coverdale lost his voice during the group’s August 11 concert at Red Rocks in Morrison, CO, forcing the group to cut short their performance. After being seen by a specialist, it was discovered that Coverdale was suffering from severe vocal chord edema and a left vocal chord vascular lesion.

“The doctors told us we were fortunate this was caught at a stage where no apparent permanent damage has been caused,” the band posted on its Web site. “We therefore regretfully have to announce that Whitesnake will not be appearing on the remainder of the tour with Judas Priest. Whitesnake sincerely regrets any disappointment this may cause.”

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Health issues also caused Aerosmith to cancel remaining tour dates after frontman Steven Tyler fell off the stage, and Beastie Boys nixed their summer tour after Adam Yauch was diagnosed with cancer.

Judas Priest’s tour ends August 23 in Gilford, NH, at the Meadowbrook US Cellular Pavilion. The tour began on June 29 in Indianapolis, IN, at the Murat Centre.