Rock trio Sleater-Kinney has postponed its upcoming European tour to allow guitarist Carrie Broenstein to recover from two severe allergic reactions.

The rocker is currently undergoing tests after a mystery illness left her requiring emergency room visits.

In a statement, the band explains: "Her doctor has advised that she not travel/tour for prolonged periods of time until the condition stabilises and further tests are conducted.

"The band apologises to all the people that this cancellation affects."