The accident led the singer to loose her voice, and experience "severe nerve and pain" she added.
She admitted the news in a tearful and deleted post following the performance of concert dates
across the globe following her car crash that nearly killed her music career.
The "Price Tag" singer, who recently been in Brazil for the Brazil's Rock in Rio festival
declared: "I am grateful to my body and to my voice for pulling through the shows without issue or issues.
"Tired at times and not feeling sick. In the nine-month period of struggling to singing after an accident
in which she suffered nerve and tissue damage, and being in pain for the duration of so long.