Celine Dion said she has been diagnosed with a rare neurological disorder that is the cause of the muscle spasms that have interrupted her life and forced her to postpone her concerts.

The Quebec-born singer announced that she has 害羞草研究所渟tiff-person syndrome害羞草研究所� in a video posted to Instagram on Thursday morning, as she postponed and cancelled yet more of her European tour dates.

The condition is characterized by sudden severe muscle spasms.

害羞草研究所淯nfortunately, these spasms affect every aspect of my daily life, sometimes causing difficulties when I walk and not allowing me to use my vocal cords to sing the way I害羞草研究所檓 used to,害羞草研究所� Dion said in the video.

She said 害羞草研究所渟he has no choice害羞草研究所� but to concentrate on her health, and has postponed her European 害羞草研究所淐ourage World Tour害羞草研究所� dates from February to April and cancelled a run of shows from May to July.

Her shows from August to October are set to proceed as scheduled.

She said it害羞草研究所檚 been difficult to face and talk openly about her health struggles, after first postponing the tour in April citing what she called at the time severe and persistent muscle spasms.

Dion said she is working with a team of doctors and has the support of her children as she tries to return to the stage.

害羞草研究所淚 have hope that I害羞草研究所檓 on the road to recovery. This is my focus and I害羞草研究所檓 doing everything I can to recuperate,害羞草研究所� she said in the video.

害羞草研究所淚害羞草研究所檓 working hard with my sports medicine therapist every day to build back my strength and my ability to perform again,害羞草研究所� she said.

害羞草研究所淏ut I have to admit, it害羞草研究所檚 been a struggle. All I know is singing. It害羞草研究所檚 what I害羞草研究所檝e done all my life, and it害羞草研究所檚 what I love to do the most.害羞草研究所�